CHINA - 2016/10/23: A couple of young parents take their only kid's hand walking on the road.  China has one of the worlds lowest total fertility rates.  According to the 2016 China Statistical Yearbook, the countrys 2015 fertility rate was about 1.05  far below the 2.1 rate needed to keep the population level steady.  Chinese demography experts call on the central government to further loosen its birth control policy within two years owing to a predicted population decline in 2018. (Photo by Zhang Peng/LightRocket via Getty Images)
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