In the forecasting business, demographics always rule, the report says. People are a nation’s primary resource. Therefore, it is safe to predict that both economic and military power will lie with the countries that have the right population numbers, and also the right age structure, in 20 years time. So who are the winners and losers in this numbers game? The trends are surprisingly one-sided.
http://www.stuff.co.nz/the-press/lifestyle/3753310/Population-key-to-power