50至150年人口金字塔及扶養比動態圖
Demographic statistics of the United States, Population pyramid
Demographics of Taiwan: Births and deaths peak 19 years 400k: 1955-1966, 1976-1982, boomers delay 7 years: 1953-1971. Generation X?
人口金字塔 Animation Pause
Interesting links here
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