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Unnamed: 0 | Unnamed: 1 | Unnamed: 2 | Unnamed: 3 | Unnamed: 4 | Unnamed: 5 | Unnamed: 6 | Unnamed: 7 | Unnamed: 8 | Unnamed: 9 | Unnamed: 10 | Unnamed: 11 | Unnamed: 12 | Unnamed: 13 | Unnamed: 14 | Unnamed: 15 | Unnamed: 16 | Unnamed: 17 | Unnamed: 18 | Unnamed: 19 | Unnamed: 20 | Unnamed: 21 | Unnamed: 22 | Unnamed: 23
 |  |  |  |  | 第20表  年齢（３区分）別割合及び年齢構造指数－全国，都道府県  [NAME]）
 |  |  |  |  | Table 20.  Percent by Age (3 Groups) and Indices of Age Composition - Japan and Prefectures : 1920 to 2000 - Continued
 |  |  |  |  | その３　老年人口の割合(％) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Part 3.  Percent of population aged 65 and over
 |  |  |  |  |  | 地域 |  |  |  | 大正 | 昭和 | 昭和 | 昭和 | 昭和 | 昭和 | 昭和 | 昭和 | 昭和 | 昭和 | 昭和 | 平成 | 平成 | 平成
 |  |  |  |  |  |  |  |  |  | ９年 | ５年 | 15年 | 25年 | 30年 | 35年 | 40年 | 45年 | 50年 | 55年 | 60年 | ２年 | ７年 | 12年
 |  |  |  |  |  | Area |  |  |  | 1920 | 1930 | 1940 | 1950 | 1955 | 1960 | 1965 | 1970 | 1975 | 1980 | 1985 | 1990 | 1995 | 2000
 |  |  |  |  |  | 全         国  Japan |  |  |  | 5.3 | 4.8 | 4.7 | 4.9 | 5.3 | 5.7 | 6.3 | 7.1 | 7.9 | 9.1 | 10.3 | 12 | 14.5 | 17.3
 |  |  |  |  |  |  | 1 | 北海道 |  | 3 | 2.9 | 3.3 | 3.7 | 3.9 | 4.2 | 4.8 | 5.8 | 6.9 | 8.1 | 9.7 | 12 | 14.8 | 18.2
 |  |  |  |  |  |  | 2 | 青森県 |  | 4.4 | 3.7 | 3.6 | 3.7 | 4 | 4.5 | 5.3 | 6.3 | 7.5 | 8.8 | 10.4 | 12.9 | 16 | 19.5
 |  |  |  |  |  |  | 3 | 岩手県 |  | 6.2 | 5 | 4.4 | 4.4 | 4.8 | 5.3 | 6.1 | 7.3 | 8.5 | 10.1 | 11.9 | 14.5 | 18 | 21.5
 |  |  |  |  |  |  | 4 | 宮城県 |  | 4.8 | 4 | 4.1 | 4.1 | 4.7 | 5.4 | 6.1 | 6.9 | 7.7 | 8.7 | 9.9 | 11.9 | 14.5 | 17.3
 |  |  |  |  |  |  | 5 | 秋田県 |  | 4.1 | 3.2 | 3.6 | 3.3 | 3.8 | 4.6 | 5.8 | 7.3 | 8.9 | 10.5 | 12.6 | 15.6 | 19.6 | 23.5
 |  |  |  |  |  |  | 6 | 山形県 |  | 4.5 | 3.9 | 4.2 | 4.3 | 5 | 5.8 | 6.9 | 8.5 | 10.1 | 11.7 | 13.4 | 16.3 | 19.8 | 23
 |  |  |  |  |  |  | 7 | 福島県 |  | 4.8 | 4.4 | 4.6 | 4.6 | 5.1 | 5.9 | 6.8 | 8 | 9.2 | 10.5 | 11.9 | 14.3 | 17.4 | 20.3
 |  |  |  |  |  |  | 8 | 茨城県 |  | 6.2 | 5.8 | 5.8 | 5.5 | 6 | 6.6 | 7.2 | 7.9 | 8.4 | 9.2 | 10.2 | 11.9 | 14.2 | 16.6
 |  |  |  |  |  |  | 9 | 栃木県 |  | 4.7 | 4.6 | 4.8 | 4.9 | 5.5 | 6.2 | 6.9 | 7.7 | 8.3 | 9.3 | 10.5 | 12.3 | 14.8 | 17.2
 |  |  |  |  |  |  | 10 | 群馬県 |  | 4.6 | 4.3 | 4.4 | 4.8 | 5.4 | 6.1 | 6.9 | 7.9 | 8.8 | 10 | 11.2 | 13 | 15.6 | 18.1
 |  |  |  |  |  |  | 11 | 埼玉県 |  | 5.4 | 5.1 | 4.9 | 5 | 5.3 | 5.5 | 5.2 | 5.1 | 5.3 | 6.2 | 7.2 | 8.3 | 10.1 | 12.8
 |  |  |  |  |  |  | 12 | 千葉県 |  | 7 | 6.3 | 6.2 | 5.7 | 6.2 | 6.4 | 6.4 | 6.3 | 6.3 | 7 | 7.9 | 9.2 | 11.2 | 14.1
 |  |  |  |  |  |  | 13 | 東京都 |  | 3.2 | 2.6 | 2.6 | 3.2 | 3.5 | 3.8 | 4.3 | 5.2 | 6.3 | 7.7 | 8.9 | 10.5 | 13 | 15.8
 |  |  |  |  |  |  | 14 | 神奈川県 |  | 4.3 | 3.7 | 3.4 | 3.9 | 4.2 | 4.4 | 4.4 | 4.7 | 5.3 | 6.4 | 7.5 | 8.8 | 11 | 13.8
 |  |  |  |  |  |  | 15 | [NAME] |  | 5.6 | 4.8 | 5 | 5.2 | 5.8 | 6.3 | 6.9 | 8.1 | 9.6 | 11.2 | 12.8 | 15.3 | 18.3 | 21.3
 |  |  |  |  |  |  | 16 | [NAME] |  | 5.5 | 4.7 | 5.1 | 5.3 | 5.7 | 6.1 | 6.8 | 8.1 | 9.5 | 11.2 | 12.8 | 15.1 | 17.9 | 20.8
 |  |  |  |  |  |  | 17 | 石川県 |  | 6.6 | 5.7 | 5.8 | 6 | 6.5 | 6.7 | 7.2 | 8.2 | 9.1 | 10.5 | 11.9 | 13.8 | 16.2 | 18.6
 |  |  |  |  |  |  | 18 | 福井県 |  | 7 | 6.4 | 6.1 | 6.3 | 6.8 | 7.2 | 7.8 | 9 | 10.1 | 11.5 | 12.8 | 14.8 | 17.7 | 20.4
 |  |  |  |  |  |  | 19 | 山梨県 |  | 5.5 | 5.4 | 5.3 | 5.4 | 6.2 | 6.9 | 7.8 | 9 | 10.2 | 11.6 | 12.9 | 14.8 | 17.1 | 19.5
 |  |  |  |  |  |  | 20 | 長野県 |  | 5.4 | 5 | 5.3 | 5.6 | 6.5 | 7.2 | 8.1 | 9.4 | 10.7 | 12.1 | 13.6 | 16.1 | 19 | 21.4
 |  |  |  |  |  |  | 21 | 岐阜県 |  | 6.1 | 5.7 | 5.6 | 5.8 | 6.3 | 6.6 | 7 | 7.9 | 8.6 | 9.7 | 10.9 | 12.7 | 15.3 | 18.2
 |  |  |  |  |  |  | 22 | 静岡県 |  | 5.6 | 5.2 | 4.9 | 5 | 5.5 | 5.9 | 6.4 | 7.1 | 7.9 | 9.1 | 10.3 | 12.1 | 14.8 | 17.7
 |  |  |  |  |  |  | 23 | 愛知県 |  | 5.4 | 4.7 | 4.3 | 5 | 5.2 | 5.2 | 5.3 | 5.7 | 6.3 | 7.4 | 8.5 | 9.8 | 11.9 | 14.5
 |  |  |  |  |  |  | 24 | 三重県 |  | 6 | 5.9 | 6 | 6.1 | 6.7 | 7.2 | 7.9 | 9 | 9.9 | 11.1 | 12.1 | 13.6 | 16.1 | 18.9
 |  |  |  |  |  |  | 25 | 滋賀県 |  | 6.5 | 6.1 | 6.3 | 6.3 | 7 | 7.6 | 8.1 | 8.9 | 9.3 | 10 | 10.8 | 12 | 14.1 | 16.1
 |  |  |  |  |  |  | 26 | 京都府 |  | 5 | 4.4 | 4.6 | 5.1 | 5.7 | 6.3 | 7 | 7.9 | 9 | 10.2 | 11.2 | 12.6 | 14.7 | 17.4
 |  |  |  |  |  |  | 27 | 大阪府 |  | 3.4 | 3 | 3 | 3.7 | 4.1 | 4.3 | 4.6 | 5.2 | 6 | 7.2 | 8.3 | 9.7 | 11.9 | 14.9
 |  |  |  |  |  |  | 28 | 兵庫県 |  | 5.1 | 4.8 | 4.5 | 4.9 | 5.4 | 5.7 | 6.2 | 6.9 | 7.9 | 9.2 | 10.3 | 11.9 | 14.1 | 16.9
 |  |  |  |  |  |  | 29 | 奈良県 |  | 5 | 5.1 | 5.5 | 5.7 | 6.3 | 6.7 | 7.3 | 8 | 8.5 | 9.3 | 10.1 | 11.6 | 13.9 | 16.6
 |  |  |  |  |  |  | 30 | 和歌山県 |  | 5.7 | 5.6 | 5.9 | 6.2 | 6.6 | 7.3 | 8 | 9.2 | 10.4 | 11.8 | 13.2 | 15.3 | 18.1 | 21.2
 |  |  |  |  |  |  | 31 | [NAME] |  | 7.4 | 7.3 | 7 | 6.3 | 7 | 7.7 | 8.8 | 9.9 | 11.1 | 12.3 | 13.7 | 16.2 | 19.3 | 22
 |  |  |  |  |  |  | 32 | 島根県 |  | 7.9 | 7.3 | 7.4 | 7.1 | 7.6 | 8.4 | 9.7 | 11.2 | 12.5 | 13.7 | 15.3 | 18.2 | 21.7 | 24.8
 |  |  |  |  |  |  | 33 | 岡山県 |  | 6.6 | 6.5 | 6.8 | 6.6 | 7 | 7.5 | 8.7 | 9.7 | 10.7 | 11.9 | 13 | 14.8 | 17.4 | 20.2
 |  |  |  |  |  |  | 34 | 広島県 |  | 6.3 | 5.9 | 5.9 | 6.1 | 6.6 | 7.1 | 7.7 | 8.2 | 8.9 | 10.2 | 11.5 | 13.4 | 15.8 | 18.5
 |  |  |  |  |  |  | 35 | 山口県 |  | 6.7 | 6.2 | 5.9 | 5.7 | 6.2 | 6.8 | 7.9 | 9.1 | 10.2 | 11.6 | 13.3 | 15.9 | 19 | 22.2
 |  |  |  |  |  |  | 36 | 徳島県 |  | 7.4 | 7.2 | 7.4 | 6.6 | 7.1 | 7.5 | 8.4 | 9.6 | 10.7 | 12 | 13.3 | 15.5 | 18.9 | 21.9
 |  |  |  |  |  |  | 37 | 香川県 |  | 5.9 | 5.8 | 6.3 | 6.3 | 6.9 | 7.5 | 8.5 | 9.5 | 10.5 | 11.9 | 13.3 | 15.4 | 18.2 | 20.9
 |  |  |  |  |  |  | 38 | 愛媛県 |  | 6.5 | 6.2 | 6.6 | 6.1 | 6.5 | 7.2 | 8.2 | 9.4 | 10.4 | 11.6 | 12.9 | 15.4 | 18.5 | 21.4
 |  |  |  |  |  |  | 39 | 高知県 |  | 7 | 6.8 | 7.7 | 6.6 | 7.5 | 8.5 | 10.1 | 11.4 | 12.2 | 13.1 | 14.5 | 17.2 | 20.6 | 23.6
 |  |  |  |  |  |  | 40 | 福岡県 |  | 4.4 | 4.1 | 4.1 | 4.3 | 4.6 | 5.2 | 6.2 | 7.3 | 8.3 | 9.4 | 10.6 | 12.4 | 14.8 | 17.4
 |  |  |  |  |  |  | 41 | [NAME] |  | 5.4 | 5.1 | 5.4 | 5.2 | 5.5 | 6.3 | 7.8 | 9.3 | 10.7 | 11.8 | 13 | 15.1 | 17.8 | 20.4
 |  |  |  |  |  |  | 42 | 長崎県 |  | 5.7 | 5.4 | 5.3 | 5 | 5.2 | 5.8 | 7 | 8.2 | 9.5 | 10.7 | 12.1 | 14.7 | 17.7 | 20.8
 |  |  |  |  |  |  | 43 | 熊本県 |  | 6.4 | 6 | 6.5 | 5.8 | 6 | 6.8 | 8.1 | 9.4 | 10.7 | 11.7 | 13.2 | 15.4 | 18.3 | 21.3
 |  |  |  |  |  |  | 44 | 大分県 |  | 6.7 | 6.1 | 6.5 | 6 | 6.4 | 7.1 | 8.3 | 9.5 | 10.6 | 11.7 | 13.1 | 15.5 | 18.6 | 21.8
 |  |  |  |  |  |  | 45 | 宮崎県 |  | 5.5 | 5.3 | 5.6 | 4.9 | 5.2 | 6 | 7.1 | 8.4 | 9.5 | 10.5 | 12 | 14.2 | 17.4 | 20.7
 |  |  |  |  |  |  | 46 | 鹿児島県 |  | 5.4 | 5.4 | 6.3 | 5.5 | 6.2 | 7.2 | 8.5 | 10.1 | 11.5 | 12.7 | 14.2 | 16.6 | 19.7 | 22.6
 |  |  |  |  |  |  | 47 | [NAME] |  | 4.3 | 5.2 | 6.9 | 5 | 4.9 | 5.5 | 5.9 | 6.6 | 7 | 7.8 | 8.6 | 9.9 | 11.7 | 13.8
 |  |  |  |  | For the identification codes and names of prefectures, see “Reference 5”.