| 表1-1-5 人口の平均年齢,中位数年齢および年齢構造指数:中位推計 | ||||||||||||
| 年 次 | 平均年齢 (歳） |
中位数 年齢 (歳） |
生産年齢人口を15〜64歳とした場合 | 生産年齢人口を20〜69歳とした場合 | ||||||||
| 従属人口指数(%) | 老年化 指数(%) |
従属人口指数(%) | 老年化 指数(%) |
|||||||||
| 総 数 | 年少人口 | 老年人口 | 総 数 | 年少人口 | 老年人口 | |||||||
| 平成 12 | (2000) | 41.4 | 41.5 | 46.9 | 21.4 | 25.5 | 119.1 | 47.6 | 30.2 | 17.4 | 57.4 | |
| 13 | (2001) | 41.8 | 41.8 | 47.8 | 21.3 | 26.6 | 124.8 | 48.0 | 29.9 | 18.1 | 60.7 | |
| 14 | (2002) | 42.1 | 42.1 | 48.7 | 21.2 | 27.5 | 130.1 | 48.4 | 29.5 | 18.9 | 64.0 | |
| 15 | (2003) | 42.5 | 42.4 | 49.4 | 21.0 | 28.4 | 134.8 | 48.8 | 29.1 | 19.6 | 67.4 | |
| 16 | (2004) | 42.8 | 42.6 | 50.0 | 21.0 | 29.1 | 138.6 | 49.1 | 28.8 | 20.3 | 70.7 | |
| 17 | (2005) | 43.1 | 42.9 | 51.0 | 21.0 | 30.0 | 143.2 | 49.6 | 28.5 | 21.1 | 74.1 | |
| 18 | (2006) | 43.4 | 43.2 | 52.2 | 21.0 | 31.2 | 148.5 | 50.2 | 28.3 | 21.9 | 77.6 | |
| 19 | (2007) | 43.7 | 43.5 | 53.4 | 21.0 | 32.4 | 154.0 | 50.8 | 28.1 | 22.7 | 80.9 | |
| 20 | (2008) | 44.0 | 43.8 | 54.5 | 21.0 | 33.5 | 159.1 | 51.3 | 27.9 | 23.4 | 83.9 | |
| 21 | (2009) | 44.3 | 44.2 | 55.6 | 21.0 | 34.6 | 164.6 | 51.6 | 27.7 | 23.9 | 86.2 | |
| 22 | (2010) | 44.6 | 44.4 | 56.1 | 20.9 | 35.2 | 168.3 | 52.3 | 27.6 | 24.7 | 89.3 | |
| 23 | (2011) | 44.9 | 44.7 | 56.4 | 20.8 | 35.6 | 171.2 | 53.2 | 27.6 | 25.6 | 92.7 | |
| 24 | (2012) | 45.2 | 45.0 | 58.1 | 20.8 | 37.2 | 178.8 | 54.2 | 27.6 | 26.6 | 96.3 | |
| 25 | (2013) | 45.5 | 45.4 | 59.9 | 20.9 | 39.1 | 187.1 | 55.1 | 27.6 | 27.5 | 99.6 | |
| 26 | (2014) | 45.7 | 45.7 | 61.9 | 21.0 | 40.9 | 195.3 | 55.9 | 27.5 | 28.4 | 103.1 | |
| 27 | (2015) | 46.0 | 46.1 | 63.4 | 21.0 | 42.4 | 202.3 | 56.1 | 27.4 | 28.8 | 105.2 | |
| 28 | (2016) | 46.2 | 46.5 | 64.5 | 20.9 | 43.6 | 208.8 | 56.2 | 27.2 | 29.0 | 106.8 | |
| 29 | (2017) | 46.5 | 46.8 | 65.3 | 20.8 | 44.6 | 214.7 | 57.6 | 27.2 | 30.4 | 111.7 | |
| 30 | (2018) | 46.7 | 47.2 | 65.9 | 20.6 | 45.3 | 219.9 | 59.1 | 27.2 | 31.9 | 117.2 | |
| 31 | (2019) | 47.0 | 47.6 | 66.3 | 20.4 | 45.9 | 224.5 | 60.7 | 27.3 | 33.5 | 122.5 | |
| 32 | (2020) | 47.2 | 48.0 | 66.7 | 20.3 | 46.4 | 228.9 | 61.9 | 27.3 | 34.7 | 127.1 | |
| 33 | (2021) | 47.4 | 48.4 | 66.9 | 20.1 | 46.8 | 232.9 | 62.8 | 27.2 | 35.6 | 131.1 | |
| 34 | (2022) | 47.7 | 48.7 | 67.0 | 19.9 | 47.1 | 236.3 | 63.3 | 27.0 | 36.3 | 134.6 | |
| 35 | (2023) | 47.9 | 49.1 | 67.1 | 19.8 | 47.4 | 239.8 | 63.7 | 26.8 | 36.9 | 137.6 | |
| 36 | (2024) | 48.1 | 49.5 | 67.3 | 19.6 | 47.7 | 243.3 | 63.8 | 26.6 | 37.2 | 140.0 | |
| 37 | (2025) | 48.3 | 49.8 | 67.5 | 19.5 | 48.0 | 246.5 | 64.0 | 26.4 | 37.6 | 142.4 | |
| 38 | (2026) | 48.5 | 50.1 | 67.6 | 19.3 | 48.3 | 249.5 | 64.0 | 26.2 | 37.8 | 144.3 | |
| 39 | (2027) | 48.7 | 50.4 | 67.8 | 19.2 | 48.5 | 252.5 | 63.9 | 26.0 | 37.9 | 145.9 | |
| 40 | (2028) | 48.8 | 50.7 | 68.0 | 19.1 | 48.9 | 255.7 | 63.8 | 25.8 | 38.0 | 147.4 | |
| 41 | (2029) | 49.0 | 50.9 | 68.4 | 19.1 | 49.3 | 258.9 | 63.9 | 25.6 | 38.2 | 149.1 | |
| 42 | (2030) | 49.2 | 51.2 | 69.0 | 19.0 | 50.0 | 262.7 | 63.8 | 25.5 | 38.4 | 150.5 | |
| 43 | (2031) | 49.3 | 51.4 | 68.9 | 18.9 | 50.0 | 264.1 | 63.8 | 25.3 | 38.4 | 151.7 | |
| 44 | (2032) | 49.5 | 51.6 | 69.6 | 18.9 | 50.7 | 268.0 | 63.8 | 25.2 | 38.6 | 153.0 | |
| 45 | (2033) | 49.6 | 51.8 | 70.4 | 19.0 | 51.5 | 271.7 | 63.9 | 25.1 | 38.8 | 154.4 | |
| 46 | (2034) | 49.7 | 52.0 | 71.4 | 19.0 | 52.4 | 275.6 | 64.1 | 25.0 | 39.1 | 155.9 | |
| 47 | (2035) | 49.9 | 52.2 | 72.4 | 19.1 | 53.3 | 279.7 | 64.5 | 25.0 | 39.5 | 157.9 | |
| 48 | (2036) | 50.0 | 52.3 | 73.6 | 19.2 | 54.4 | 284.0 | 64.3 | 24.9 | 39.4 | 158.2 | |
| 49 | (2037) | 50.1 | 52.5 | 75.0 | 19.3 | 55.7 | 288.6 | 64.9 | 24.9 | 40.0 | 160.4 | |
| 50 | (2038) | 50.2 | 52.6 | 76.5 | 19.4 | 57.1 | 293.5 | 65.6 | 25.0 | 40.6 | 162.6 | |
| 51 | (2039) | 50.3 | 52.8 | 78.0 | 19.6 | 58.4 | 298.3 | 66.3 | 25.0 | 41.3 | 165.0 | |
| 52 | (2040) | 50.4 | 52.9 | 79.3 | 19.7 | 59.6 | 302.3 | 67.2 | 25.1 | 42.1 | 167.5 | |
| 53 | (2041) | 50.5 | 52.9 | 80.4 | 19.8 | 60.6 | 305.9 | 68.2 | 25.2 | 43.0 | 170.4 | |
| 54 | (2042) | 50.6 | 53.0 | 81.3 | 19.9 | 61.5 | 309.1 | 69.4 | 25.4 | 44.0 | 173.5 | |
| 55 | (2043) | 50.7 | 53.1 | 82.2 | 20.0 | 62.3 | 312.1 | 70.7 | 25.5 | 45.2 | 177.0 | |
| 56 | (2044) | 50.8 | 53.1 | 83.0 | 20.0 | 63.0 | 314.9 | 72.1 | 25.7 | 46.3 | 180.3 | |
| 57 | (2045) | 50.9 | 53.1 | 83.8 | 20.1 | 63.7 | 317.7 | 73.2 | 25.8 | 47.3 | 183.2 | |
| 58 | (2046) | 51.0 | 53.2 | 84.4 | 20.1 | 64.3 | 320.2 | 74.2 | 26.0 | 48.2 | 185.8 | |
| 59 | (2047) | 51.1 | 53.2 | 85.0 | 20.1 | 64.9 | 322.8 | 75.0 | 26.0 | 49.0 | 188.1 | |
| 60 | (2048) | 51.1 | 53.3 | 85.6 | 20.1 | 65.5 | 325.5 | 75.8 | 26.1 | 49.7 | 190.2 | |
| 61 | (2049) | 51.2 | 53.4 | 86.2 | 20.1 | 66.1 | 328.3 | 76.5 | 26.2 | 50.3 | 192.2 | |
| 62 | (2050) | 51.3 | 53.4 | 86.7 | 20.1 | 66.5 | 330.8 | 77.1 | 26.2 | 50.9 | 194.2 | |
| 各年10月1日現在人口.平成12(2000)年は,総務省統計局『国勢調査報告』(年齢｢不詳人口」を按分補正した）人口による. | ||||||||||||