This study analyzes the contribution of the Sectoral Total Factor Productivity Growth (TFPG) and the input's growth to the Iran's economy sectors growth during 1345 -1383. The major findings show that the average contribution of TFP growth to non-oil output's growth during first, second and third development plans has been 39.5%, 12.2% and 24.8% respectively, amounting to (as estimated) 32.6% during the fourth plan. During the development plans after revolution, the average contribution of TFP growth in service sector to non-oil GDP growth has been more and in agricultural sector less than the other ones. Even though, the average growth of capital stock and sectoral value-added before the revolution has been much more than those after revolution, but the contribution of TFP to non-oil economic growth in the aftermath of the 1979 revolution(i.e. 18.23%) has been more than the ones before the revolution (i.e. 10.9%). Reduction in the growth of capital stock, sectoral value-added and factors productivity during second development plans imply the high vulnerability of economic growth and TFP to external shocks.
JEL Classification : L1, D2, O4