China did their own population control and it seems to have reached a stable level. Africa is the big problem: http://www.unzcloud.com/wp-content/uploads/2017/06/Worlds-most-important-graph-2017.png
China's population is 1.4 billion. The one-child policy ended along time ago and could be circumvented by simply paying the government for having more children or living in the country. Their population is equivalent to 18.47% of the total global population. It was closer to 1/3 at one stage but the niggers and pajeets having been gaining on them.
They have the largest growing middle-class in the world, their population is definitely not under control. Then go look at all the occidental countries cities which are completely overrun with Asian expatriats that aren't counted in the data.
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