among mixed exporters the strongest gains in productivity took place in myanmar with a percent average annual growth rate and benin lao people s democratic republic and sierra leone where tfp growth was approximately per cent per annum in the case of fuel exporters tfp growth has been led by the performance of the agriculture of angola and yemen where it rose on average by per cent and per cent annually respectively during the same period the major new finding yielded by tfp analysis is the positive outcome of tfp growth in the exporters of food and agricultural products since the s