Intrasectoral structural change and aggregate productivity development: robust stochastic nonparametric frontier function estimates

This paper investigates the sources of total factor productivity growth in the German manufacturing sector during 1981–1998. Decompositions of aggregate productivity growth are used to identify the effects of structural change and entry–exit on aggregate productivity growth. We find a substantial rise in productivity growth after the German reunification. The bulk of this rise can be attributed to structural change and entry–exit. Two methodological refinements are implemented. The first refinement is the application of robust stochastic nonparametric approaches to frontier function analysis, and the second is the calculation of bootstrap confidence intervals for the components of the productivity decompositions.