| Abstract: | This paper develops new estimates of investment in and outputof information and communication technology (ICT). These newestimates imply that GDP growth has been significantly understated,particularly since 1994. A growth-accounting approach is employedto measure the contribution of ICT to the growth of both aggregateoutput and aggregate input. On both counts, the contributionof ICT has been rising over time. From 1989 to 1998, ICT outputcontributed a fifth of overall GDP growth. Since 1989, 55 percent of capital deepening (the growth of capital per hour worked)has been contributed by ICT capital; since 1994 this proportionhas risen to 90 per cent. ICT capital deepening accounts for25 per cent of the growth of labour productivity over 1989–98and 48 per cent over 1994–8. But even when output growthis adjusted for the new ICT estimates, both labour productivityand TFP growth are still found to slow down after 1994. |
