We review the growth experience of middle-income countries. Economic factors associated with growth appear to differ between middle income and other countries. The efficiency of the financial system is importantly related to the growth rate in low- and middle-income countries, but appears to...

Changes in the population age structure can have a significant effect on fiscal sustainability since they can affect both government revenues and expenditures. For example, population aging will increase expenditures on the elderly while reducing potential growth and hence revenues. In this...