ヒョウ2−6 人口の年齢構造に関する指標:1884〜2007年    
年次   人口割合(%)  平均年齢 中位数年齢 従属人口指数 老年化
0〜14歳 15〜64歳 65歳以上 (歳) (歳)   年少人口 老年人口 指数
1884 31.6 62.6 5.7 28.9 21.0 59.6 50.5 9.1 18.1
1888 33.7 60.8 5.5 28.2 24.5 64.5 55.5 9.0 16.3
1898 32.8 61.7 5.5 28.0 23.9 62.1 53.2 8.9 16.7
1908 34.2 60.5 5.3 27.7 24.1 65.2 56.5 8.7 15.3
1920 36.5 58.3 5.3 26.7 22.2 71.6 62.6 9.0 14.4
1930 36.6 58.7 4.8 26.3 21.8 70.5 62.4 8.1 13.0
1940 36.7 58.5 4.8 26.6 21.9 70.9 62.7 8.2 13.1
1947 35.3 59.9 4.8 26.6 22.1 66.9 58.9 8.0 13.6
1950 35.4 59.7 4.9 26.6 22.3 67.5 59.3 8.3 14.0
1955 33.4 61.3 5.3 27.6 23.7 63.1 54.4 8.7 15.9
1960 30.0 64.2 5.7 29.1 25.6 55.7 46.8 8.9 19.1
1965 25.6 68.1 6.3 30.4 27.5 46.8 37.6 9.2 24.6
1970 23.9 69.0 7.1 31.5 29.1 44.9 34.7 10.2 29.5
1975 24.3 67.7 7.9 32.5 30.6 47.6 35.9 11.7 32.6
1980 23.5 67.4 9.1 33.9 32.5 48.4 34.9 13.5 38.7
1985 21.5 68.2 10.3 35.7 35.2 46.7 31.6 15.1 47.9
1990 18.2 69.7 12.1 37.6 37.7 43.5 26.2 17.3 66.2
1995 16.0 69.5 14.6 39.6 39.7 43.9 23.0 20.9 91.2
2000 14.6 68.1 17.4 41.4 41.5 46.9 21.4 25.5 119.1
2005 13.8 66.1 20.2 43.3 43.3 51.3 20.8 30.5 146.5
2006 13.6 65.5 20.8 43.6 43.6 52.6 20.8 31.8 152.6
2007 13.5 65.0 21.5 44.0 43.9 53.9 20.8 33.1 158.8