PROBLEMS OF DETERMINING AND MEASURING THE RELIABILITY OF NATIONAL ACCOUNTS IN DEVELOPING COUNTRIES

Most developing countries have compiled national accounts on a regular basis only for the last few years. It has not yet been possible for them to collect many of the statistics necessary to obtain good coverage of their economic activities by methods which would generally be accepted as reliable. Consequently the checks on reliability imposed by the framework of the national accounts are often absent, and the accounts prepared contain many estimates of doubtful quality. These doubts can usually only be removed as statistics collected by better methods become available. This is proving to be a slow process, partly because of the shortage of trained statistical staff and the competing demands of social and demographic statistics and partly because of the inherent difficulties in collecting good statistics from small businesses and traditional households. The need to define traditional households as producers as well as consumers leads to our demanding extra information from this difficult sector. In addition it is often difficult for the national accounts statistician, and even more so for the user, to find out in the time available exactly how some of the statistics with which he is presented were obtained. When this cannot be done it is impossible to assess their reliability. Thus assessing the overall reliability of national accounts in developing countries for even a limited range of uses is at present largely a matter of personal judgment. The information necessary to make more objective assessments rarely exists and hence the problems which developed countries face in using such information are not yet within the experience of most developing countries.     

DEVELOPMENT OF AN ALGORITHM FOR THE COMPILATION OF NATIONAL ACCOUNTS AND RELATED SYSTEMS OF STATISTICS*

The present article includes a proposal for a national accounts algorithm to be applied in the computerization of the national accounts compilation process. While aiming at the estimation and reconciliation of data from different statistical sources, it is based on the application of a linear programming technique applied to a system of identities and inequalities that define the accounting and analytical relations between the data categories of a national accounting framework. The technique is flexible in the sense that it can be used with any configuration of available statistical sources and data requirements of the national accounts. The algorithm is illustrated graphically with help of a simple example and thereafter applied to an extended but still simple national accounting scheme for Suriname with data for 1965 that was compiled by the author many years ago. As the present study is only a first step in the development of the algorithm, more work is needed to make it operational and the last section of the article includes suggestions about the direction of that further work.     

INTEGRATED ENVIRONMENTAL AND ECONOMIC ACCOUNTING: FRAMEWORK FOR A SNA SATELLITE SYSTEM

National accounts have provided the most widely used indicators for the assessment of economic performance, trends of economic growth and of the economic counterpart of social welfare. However, two major drawbacks of national accounting have raised doubts about the usefulness of national accounts data for the measurement of long-term sustainable economic growth and socio-economic development. These drawbacks are the neglect of (a) scarcities of natural resources which threaten the sustained productivity of the economy and (b) the degradation of environmental quality from pollution and its effects on human health and welfare. In the present paper, the authors attempt to reflect environmental concerns in an accounting framework which maintains as far as possible SNA concepts and principles. To this end, the accounting framework is used to develop a "SNA Satellite System for Integrated Environmental and Economic Accounting" (SEEA). Environmental costs of economic activities, natural asset accounts and expenditures for environmental protection and enhancement, are presented in flow accounts and balance sheets in a consistent manner, i.e. maintaining the accounting identities of SNA. Such accounting permits the definition and compilation of modified indicators of income and expenditure, product, capital and value added, allowing for the depletion of natural resources, the degradation of environmental quality and social response to these effects. A desk study of a selected country is used to clarify the proposed approaches, to demonstrate their application in future country studies and to illustrate the quantitative effects of the use of modified concepts on the results of analysis.     

NATIONAL ACCOUNTS ESTIMATION USING INDICATOR RATIOS

We propose a new approach to national accounts compilation, which also serves as a formalization of current compilation practices. When formalizing the procedure, a distinction is made between (basic) data, national accounts identities and so-called indicator ratios. The latter are ratios of or percentage relations between national accounts variables, such as the relation between output and value added. Indicator ratios are currently used in national accounts compilation practices in order to make adjustments to the basic data or to fill in missing data. The latter use is particularly relevant when basic data are scarce, which is the case not only in many developing countries, but also in developed countries when annual accounts are compiled for recent periods. The (basic) data, indicator ratios and identities together are used in a Bayesian approach to estimate the values of national accounts variables and analytical indicator ratios based thereon. The amendment of the current practices consists in introducing reliability intervals of basic data and indicator ratios, which allows for the use of a much larger number of indicator ratios in the compilation and checking of national accounts data. The Bayesian compilation approach makes it possible–in contrast to current practices–to use indicator ratios both as priors and as analytical indicators.     

THE DEVELOPMENT OF NATIONAL ACCOUNTS IN ARGENTINA*

The history of national accounting in Argentina is presented in brief. The use of the production method as a basis for GDP estimates is explained and sources and methods of deriving the estimates for different sectors are commented on in some detail. Next the reliability of the estimates is examined for sectoral product, national income by factor shares and the components of final expenditure in terms of the comparison of two different estimates for the period 1950–1963. The degree of accuracy is judged to be generally sufficient, but the importance of economic censuses in the process of estimation is stressed. The importance of detailed studies on several different aspects of the economic structure (input-output, personal and family income by size and regional accounts) is also stressed as a basis for improving the reliability of estimates.     

PROBLEMS OF DETERMINING AND MEASURING THE RELIABILITY OF THE NATIONAL ACCOUNTS: HUNGARY'S EXPERIENCES

Economic realities can be described in national accounting only by certain approximative means and presumptions; therefore they cannot be measured with absolute accuracy. However, because of their great importance these investigations must fulfil as far as possible the reliability required for the economic control and planning of the national economy, in accordance with predetermined concepts and methods. The reliability of national accounting is favourable in Hungary, as they are based mostly (92 percent) on the bookkeeping data of enterprises, cooperatives and institutions. The bookkeeping system is uniform in all economic organizations, in conformity with central regulations, and it takes into account the demand of computations for national accounting. Despite these favourable conditions lesser or greater contradictions can be found in the national accounts every year. The absolute measure of the differences is not significant; however, if compared to the annual increase it results in uncertainty of 15 percent. The uncertainty is reduced by the fact that the sign of differences is the same every year. The author classifies the causes of uncertainty in national accounts into four groups: 1. problems of the time shift of the connected economic processes and of their accounting; 2. effect of the enterprise interests; 3. inadequacy of methodological regulation; 4. inaccuracy of data surveys and processing. The study deals with the special factors of inaccuracy occurring in constant price accounting. Inaccuracy of the most important aggregates, for instance that of the volume index of the national income, comes to 0.5-0.7 percent which results, in the case of a yearly 5 percent “real” increase in the index, in reliability limits of 10 to 15 percent. In the concluding part of the study the author points out that in Hungary the unexplored contradictions are not shown as “statistical discrepancy” but they are included in the various aggregates on the basis of considerations discussed in the study.     

KVARTS - a quarterly model of the Norwegian economy

This paper presents the main characteristics of the first version of a quarterly 12 sector macroeconomic model of the Norwegian economy. The general purpose of the project is to obtain a framework for quantitative analysis of the short-term development of the economy. Quarterly national accounts data constitute a main data source, but short- term statistics outside the national accounting system also play a significant role in the model structure. The model's main structure and basic theoretical properties are presented, selected estimation results for single equations are reported and some experiences from simulation experiments performed on selected model blocks and by means of the complete model are given.     

中国投入产出核算的缺陷及其改进路径

本文首先概述了中国投入产出工作的历史与贡献,继而从现阶段中国投入产出表的编制流程及部分特点出发,借鉴国际标准及部分发达国家的实践经验并考虑我国统计与核算的现实需要,研究了中国投入产出核算存在的主要缺陷。最后,针对这些缺陷和不足,本文提出了从部门分类、核算价格、调查对象、调查方案设计和编表方法等方面改进我国投入产出核算工作的积极并具有针对性和建设性的建议。     

AN EXAMINATION OF THE FEASIBILITY OF USING MONETARY DATA FOR NATIONAL INCOME ESTIMATES

In a number of underdeveloped countries today, adequate statistics for estimating national output by traditional national accounting methods are unavailable or unreliable. However, many of these same countries do publish data on monetary variables at an early stage in their development. These data can now be used to estimate national income.
In this study the money supply was defined to include all currency in circulation, private deposits subject to check at all banks and postal systems, all government deposits, and unused overdrafts less float. The national accounts data were taken from United Nations sources and data supplied by various foreign statistical offices. To make the accounts more comparable in terms of coverage and to limit reported income to the monetized sector of the economy, non-monetary imputations were deleted.
The monetary and national accounts data were combined in a multiple, stepwise regression. National income was used as the dependent variable and money supply and other data were used as the independent variables. The final estimating equations explained about 96 per cent of the variation in income between countries. Other tests were conducted using the currency ratio, transactions velocity, population, and per capita consumption. However, these variables did not augment the explanatory power of the regression equations.
When the equations were used to estimate national income for twenty-two under-developed countries, the derived estimates showed a high degree of concordance with reported income where it existed for comparative purposes. The results indicate that monetary data can be used to estimate national income for underdeveloped countries with a relatively high degree of accuracy, between countries, and from year to year within a country.     

A BALANCED SYSTEM OF NATIONAL ACCOUNTS FOR THE UNITED KINGDOM

This paper describes the construction of a disaggregated system of 262 national accounts for the U.K. economy in 1975. The objective is to remove the discrepancies between income, expenditure, production and financial estimates which occur in practice. This is done with the aid of a generalized least squares algorithm for adjusting national accounts with subjective estimates of reliability of the various account items. The balanced system of accounts provides the cross-section data base needed for the estimation of a consistent multisectoral dynamic model of the U.K. economy and yields the classification converters and input-output tables necessary for such a model.     

Introducing a certified economic accountant (CEA) degree or diploma program: Would Nancy and Richard Ruggles approve?

This paper is inspired by the work of Nancy and Richard Ruggles promoting national economic accounting in academic and non-academic areas. They were concerned with both compilation and use of national accounts as well as developmental issues. Now that the subject has matured with the 1993 SNA standards, the compilation, development and understanding of the accounts require special training and experience, but national economic accounting has become a multidisciplinary matter that cannot easily fit into one academic department. Hence we advocate a Certified Economic Accountant (CEA) degree or diploma program to gain enhanced recognition and greater understanding for national economic accountants and their work. The paper includes an annotated list of 50 references, covering the period 1942–2002, that might form a syllabus, and a section outlining the mechanics and problems of organizing such a program.     

RELIABILITY OF THE QUARTERLY NATIONAL INCOME AND PRODUCT ACCOUNTS OF THE UNITED STATES, 1947–1971*

The reliability of the quarterly national income and product (NIP) accounts of the United States is examined from several standpoints. First, possible sources of error in the quarterly NIP accounts are explored, the most important being the lack of appropriate data, seasonal adjustment errors, sampling errors and biases, and the nature of the U.S. statistical system. Next, four ways of assessing the reliability of the accounts are considered. The most weight is given to measures of revisions in early estimates of the quarterly NIP aggregates. Results of previous studies of revisions are reviewed, and a summary of a major study of revisions for the period 1947–71 is given. The other ways of assessing reliability which are examined are the effect of errors on economic policy making, analysis of the statistical discrepancy, and expert judgment on sources and methodology. The degree of accuracy is judged to be generally sufficient for the policy decisions for which the NIP estimates are used. The early estimates of a quarter's change in GNP almost always distinguish whether the ultimate estimate will be large or small and will usually distinguish whether the ultimate estimate will be larger or smaller than the preceding quarter. While the accuracy of the estimates has generally been sufficient, the accuracy for 1965 was judged insufficient by policymakers. There is some evidence that errors have been reduced over time.     

LINKAGES BETWEEN MACRO AND MICRO BUSINESS ACCOUNTS: IMPLICATIONS FOR ECONOMIC MEASUREMENT

The paper shows the relationship between microbusiness accounting based on double-entry bookkeeping and macroeconomic accounting based on quadruple-entry bookkeeping. In order for microaccounts to successfully aggregate into macroaccounts (i.e. preserve macro/micro linkages), quadruple-entry bookkeeping requires that the traditional double entries, recorded by transacting microbusiness units, be "consistent" with each other. In fact national economic accounting implicitly assumes that such consistency is maintained when national "aggregates" are uniquely extracted from national accounts and when national "identities" are claimed to hold true.
The main purpose of the paper is to show important examples where quadruple-entry consistency is not satisfied. These examples typically involve "complex" economic transactions between business units in which the legal form of the transactions do not necessarily represent their economic substance. When this occurs, different business units have genuinely divergent conceptions and perceptions with respect to their mutual economic transactions. Therefore, microbusiness accounts cannot be successfully aggregated into macroeconomic accounts without violating the integrity of microdecision making records.
The conclusion of the paper introduces a new theory called Perpetual Imbalanced Accounting. The theory shows that inconsistent (or imbalanced) economic accounting does tend to become consistent (or balanced) over sufficiently long time periods. Therefore, we must adopt a more dynamic view of national accounting if we desire to preserve successful macro/micro linkages. However, the problems of imbalanced macroaccounting and its statistical consequences cannot be entirely avoided no matter how long the accounting time period is taken. All of the above have important implications for the revision of the United Nations System of National Accounts.     

The cost of natural capital consumption: Accounting for a sustainable world economy

The System for integrated Environmental and Economic Accounting (SEEA) has been criticized in this journal for ignoring the benefits of ecosystem services for human well-being. This paper argues that extended national accounts should not attempt measuring economic welfare. Rather, they could and should assess the environmental sustainability of economic activity as the cost of natural capital consumption. The global application of SEEA concepts and methods demonstrates the feasibility of international green accounting. For the world economy, sustainability costs run to about 3 trillion US$ or 6% of world GDP. Large variations at national and regional levels suggest that conventional economic indicators may significantly overstate economic progress in some parts of the world. Data gaps and lack of data comparability affect these first estimates. National and international statistical services should be more aggressive in greening the national accounts. More prudent and more sustainable economic policies might be the result.     

INCOME DISTRIBUTION STATISTICS IN LATIN AMERICA AND THEIR RELIABILITY

This paper is addressed to the question of how far income distribution statistics currently available in Latin America can be relied upon, either to assess the degree of inequality in the national distribution of income or to undertake comparisons between countries or over time. It gives a summary account of research carried out on Latin American data.
The sources available in Latin America for estimating income distributions are discussed. Concentrating the attention on household surveys conducted in various Latin American countries, an inventory of such surveys and their characteristics is offered, along with a detailed exposition of survey methods and income concepts used for estimating household income. Methods used for assessing the representativeness of samples are summarily reviewed. The case for comparing income data from household surveys and population censuses with national accounts estimates is put forward, along with the procedures and assumptions used for carrying out such comparisons. The relative discrepancy between the two sources is taken as indicative of the degree of underestimation of each type of income in each survey. An analysis of such discrepancies across the set of surveys considered gives clues on possible underestimation biases in measuring each type of income and total household income in different types of survey and in population censuses.
Differential effects on comparability of survey results call for appropriate methods of adjusting income distribution estimates to account for the missing incomes. A method for carrying out such an adjustment is applied to income distributions from a selected number of Latin American surveys. The results obtained provide an indication of how much difference it makes to use unadjusted or adjusted data to assess income concentration or to carry out comparisons over time or space.     

RELIABILITY CRITERIA FOR NATIONAL ACCOUNTS

The reliability of national accounts is determined by the adequacy of a great variety of data sources and estimating methods. This inquiry focuses on major conceptual and methodological problems, and while it does not solve the reliability problem, it provides a framework for reliability analysis and suggests criteria for the evaluation of results; it also assists the producers of national accounts in determining the major trade-offs between different areas of possible data improvement.