Population to Peak 人口膨胀有穷时
peak value of population density 峰值客流密度
the off-peak school-age population 适龄人口低峰
No one knows when America will hit its population peak.
ECONOMIST: Demography
In fifteen years, and perhaps as few as ten, its population will peak and then rapidly fall off.
FORBES: Carlos Celdran and Asia's Sinkhole Demographics
The National Population and Family Planning Commission estimates the population will peak in 2033, when there will be 1.5 billion Chinese.
FORBES: China's New Census: The Ancient Country Is Growing Old
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