In order to achieve a gross domestic product growth rate of 7 per cent per annum, it is estimated that sub-Saharan Africa will require an investment rate of 40 per cent compared to the current rate of 17 per cent.
为了实现每年国内生产总值7%的增长率，估计撒南非洲将要求40％的投资率，而不是目前的17％。