アイルランドとナイジェリアの年齢中央値
2023 年の年齢中央値は、アイルランドが 38.4 年、ナイジェリアが 17.8 年 です（UN の推定値）。 2023 年の値はアイルランドのほうが 20.7 年 高く、ナイジェリアの 2.16 倍でした。
アイルランドナイジェリア
地図で推移を見る最新の数値
年 · UN
| 国 | 最新 | 10年前 | 2023年の順位 | 予測値 |
|---|---|---|---|---|
| アイルランド | 38.4 2023 | 34.6 | 229 か国中 64 位 | 49.9 2100 |
| ナイジェリア | 17.8 2023 | 16.6 | 229 か国中 212 位 | 34.3 2100 |
| 世界 | 30.4 2023 | 27.8 | 42.1 2100 |
数字からわかること
- 1950 年以降、両国ともデータのあるすべての年でアイルランドのほうが高くなっています。
- 国連予測（中位推計）では、2100 年にアイルランドが 49.9 年、ナイジェリアが 34.3 年 とされています。
- 世界全体：30.4 年（2023 年）。
年ごとの値
年 · UN
| 年 | アイルランド | ナイジェリア | 世界 |
|---|---|---|---|
| 2023 | 38.4 | 17.8 | 30.4 |
| 2022 | 38 | 17.6 | 30.1 |
| 2021 | 37.6 | 17.4 | 29.8 |
| 2020 | 37.3 | 17.2 | 29.6 |
| 2019 | 36.9 | 17.1 | 29.3 |
| 2018 | 36.5 | 16.9 | 29 |
| 2017 | 36.1 | 16.8 | 28.8 |
| 2016 | 35.7 | 16.7 | 28.5 |
| 2015 | 35.4 | 16.7 | 28.3 |
| 2014 | 35 | 16.6 | 28.1 |
| 2013 | 34.6 | 16.6 | 27.8 |
| 2012 | 34.2 | 16.6 | 27.6 |
| 2011 | 33.8 | 16.6 | 27.4 |
| 2010 | 33.3 | 16.7 | 27.2 |
| 2009 | 32.9 | 16.7 | 27 |
| 2008 | 32.5 | 16.7 | 26.7 |
| 2007 | 32.4 | 16.8 | 26.5 |
| 2006 | 32.4 | 16.8 | 26.3 |
| 2005 | 32.4 | 16.8 | 26.1 |
| 2004 | 32.4 | 16.9 | 25.9 |
| 2003 | 32.1 | 16.9 | 25.7 |
| 2002 | 31.9 | 16.9 | 25.5 |
| 2001 | 31.7 | 16.9 | 25.3 |
| 2000 | 31.5 | 16.8 | 25.1 |
| 1999 | 31.3 | 16.8 | 24.9 |
| 1998 | 31 | 16.7 | 24.7 |
| 1997 | 30.6 | 16.6 | 24.4 |
| 1996 | 30.3 | 16.5 | 24.2 |
| 1995 | 30 | 16.5 | 24 |
| 1994 | 29.6 | 16.4 | 23.8 |
| 1993 | 29.2 | 16.3 | 23.5 |
| 1992 | 28.9 | 16.2 | 23.3 |
| 1991 | 28.6 | 16.2 | 23.1 |
| 1990 | 28.2 | 16.2 | 22.9 |
| 1989 | 27.8 | 16.1 | 22.8 |
| 1988 | 27.3 | 16.1 | 22.6 |
| 1987 | 26.9 | 16.1 | 22.4 |
| 1986 | 26.5 | 16.2 | 22.2 |
| 1985 | 26.3 | 16.2 | 22 |
| 1984 | 26 | 16.3 | 21.9 |
| 1983 | 25.8 | 16.4 | 21.8 |
| 1982 | 25.7 | 16.5 | 21.7 |
| 1981 | 25.6 | 16.6 | 21.6 |
| 1980 | 25.5 | 16.7 | 21.5 |
| 1979 | 25.5 | 16.8 | 21.3 |
| 1978 | 25.4 | 16.9 | 21.1 |
| 1977 | 25.4 | 17.1 | 21 |
| 1976 | 25.4 | 17.2 | 20.8 |
| 1975 | 25.4 | 17.3 | 20.7 |
| 1974 | 25.4 | 17.4 | 20.5 |
| 1973 | 25.6 | 17.5 | 20.4 |
| 1972 | 25.7 | 17.7 | 20.4 |
| 1971 | 26 | 17.8 | 20.3 |
| 1970 | 26.2 | 17.9 | 20.3 |
| 1969 | 26.4 | 18 | 20.3 |
| 1968 | 26.7 | 18.1 | 20.4 |
| 1967 | 26.9 | 18.2 | 20.5 |
| 1966 | 27.2 | 18.3 | 20.6 |
| 1965 | 27.6 | 18.3 | 20.8 |
| 1964 | 27.9 | 18.3 | 21 |
| 1963 | 28.2 | 18.3 | 21.2 |
| 1962 | 28.5 | 18.3 | 21.4 |
| 1961 | 28.8 | 18.3 | 21.4 |
| 1960 | 29.1 | 18.3 | 21.5 |
| 1959 | 29.3 | 18.3 | 21.5 |
| 1958 | 29.3 | 18.3 | 21.5 |
| 1957 | 29.3 | 18.3 | 21.6 |
| 1956 | 29.3 | 18.2 | 21.7 |
| 1955 | 29.2 | 18.2 | 21.8 |
| 1954 | 29.1 | 18.2 | 21.9 |
| 1953 | 29 | 18.2 | 22 |
| 1952 | 28.8 | 18.2 | 22.1 |
| 1951 | 28.8 | 18.1 | 22.1 |
| 1950 | 29 | 18.1 | 22.2 |
国連予測（中位推計） · 2024–2100
| 年 | アイルランド | ナイジェリア | 世界 |
|---|---|---|---|
| 2024 | 38.738.6–38.8 | 1817.9–18 | 30.6 |
| 2025 | 3938.6–39.3 | 18.118–18.3 | 30.9 |
| 2026 | 39.238.6–39.8 | 18.418.1–18.6 | 31.1 |
| 2027 | 39.438.4–40.3 | 18.618.2–18.9 | 31.3 |
| 2028 | 39.638.3–40.8 | 18.818.3–19.3 | 31.6 |
| 2029 | 39.738.1–41.3 | 1918.4–19.6 | 31.8 |
| 2030 | 39.937.8–41.9 | 19.318.5–20 | 32 |
| 2031 | 40.137.6–42.5 | 19.518.6–20.4 | 32.2 |
| 2032 | 40.237.2–43.1 | 19.718.7–20.8 | 32.4 |
| 2033 | 40.336.9–43.7 | 2018.8–21.2 | 32.6 |
| 2034 | 40.436.6–44.3 | 20.218.8–21.6 | 32.8 |
| 2035 | 40.536.3–44.9 | 20.518.9–22 | 33 |
| 2036 | 40.636–45.5 | 20.718.9–22.4 | 33.2 |
| 2037 | 40.735.8–46.1 | 2119–22.8 | 33.4 |
| 2038 | 40.835.6–46.6 | 21.219–23.2 | 33.6 |
| 2039 | 40.935.4–47.2 | 21.419–23.6 | 33.8 |
| 2040 | 4135.3–47.8 | 21.718.9–24 | 34 |
| 2041 | 41.135.2–48.3 | 21.918.9–24.4 | 34.2 |
| 2042 | 41.335.2–48.9 | 22.118.9–24.8 | 34.4 |
| 2043 | 41.435.2–49.5 | 22.318.8–25.1 | 34.6 |
| 2044 | 41.635.2–50 | 22.518.9–25.5 | 34.8 |
| 2045 | 41.835.3–50.5 | 22.719–25.9 | 35 |
| 2046 | 4235.3–51 | 2319.1–26.3 | 35.2 |
| 2047 | 42.235.4–51.6 | 23.219.1–26.6 | 35.4 |
| 2048 | 42.435.5–52.1 | 23.419.3–27 | 35.6 |
| 2049 | 42.635.6–52.6 | 23.719.4–27.3 | 35.9 |
| 2050 | 42.935.6–53.1 | 23.919.5–27.7 | 36.1 |
| 2051 | 43.135.6–53.6 | 24.119.7–28.1 | 36.3 |
| 2052 | 43.435.7–54.2 | 24.419.8–28.5 | 36.5 |
| 2053 | 43.735.8–54.8 | 24.619.9–28.8 | 36.7 |
| 2054 | 4435.9–55.4 | 24.820–29.2 | 36.9 |
| 2055 | 44.335.9–56 | 25.120.2–29.5 | 37.1 |
| 2056 | 44.635.9–56.5 | 25.320.3–29.8 | 37.3 |
| 2057 | 44.936–57.1 | 25.620.5–30 | 37.5 |
| 2058 | 45.236–57.6 | 25.820.6–30.3 | 37.6 |
| 2059 | 45.436–58.2 | 26.120.7–30.6 | 37.8 |
| 2060 | 45.736.1–58.8 | 26.320.8–30.9 | 37.9 |
| 2061 | 45.936–59.4 | 26.620.9–31.1 | 38 |
| 2062 | 46.136–60 | 26.821–31.4 | 38.1 |
| 2063 | 46.336–60.6 | 27.121.1–31.6 | 38.3 |
| 2064 | 46.536–61.1 | 27.321.2–31.8 | 38.4 |
| 2065 | 46.636.1–61.7 | 27.521.4–32 | 38.5 |
| 2066 | 46.836.1–62.2 | 27.821.5–32.3 | 38.6 |
| 2067 | 46.936.1–62.7 | 2821.6–32.5 | 38.7 |
| 2068 | 4736.2–63.2 | 28.321.7–32.7 | 38.8 |
| 2069 | 47.136.2–63.6 | 28.521.8–32.9 | 38.9 |
| 2070 | 47.236.2–64 | 28.821.9–33.1 | 39 |
| 2071 | 47.236.3–64.4 | 2922–33.3 | 39.1 |
| 2072 | 47.236.4–64.8 | 29.222.2–33.5 | 39.2 |
| 2073 | 47.236.5–65.2 | 29.522.3–33.6 | 39.3 |
| 2074 | 47.236.6–65.6 | 29.722.4–33.8 | 39.4 |
| 2075 | 47.236.6–66 | 29.922.5–34 | 39.5 |
| 2076 | 47.236.7–66.4 | 30.122.7–34.2 | 39.6 |
| 2077 | 47.236.8–66.7 | 30.322.8–34.4 | 39.7 |
| 2078 | 47.236.9–67 | 30.622.9–34.6 | 39.8 |
| 2079 | 47.237–67.3 | 30.823.1–34.7 | 40 |
| 2080 | 47.337.2–67.5 | 3123.2–34.9 | 40.1 |
| 2081 | 47.337.2–67.6 | 31.223.4–35.1 | 40.2 |
| 2082 | 47.437.3–67.7 | 31.423.5–35.2 | 40.3 |
| 2083 | 47.437.4–67.7 | 31.523.7–35.4 | 40.4 |
| 2084 | 47.637.6–67.6 | 31.723.9–35.6 | 40.5 |
| 2085 | 47.737.8–67.5 | 31.924.1–35.7 | 40.6 |
| 2086 | 47.837.9–67.4 | 32.124.2–35.9 | 40.7 |
| 2087 | 4837.9–67.1 | 32.324.4–36 | 40.9 |
| 2088 | 48.137.9–66.7 | 32.424.6–36.1 | 41 |
| 2089 | 48.337.9–66.1 | 32.624.7–36.2 | 41.1 |
| 2090 | 48.537.8–64.6 | 32.824.9–36.3 | 41.2 |
| 2091 | 48.737.8–62 | 32.925–36.4 | 41.3 |
| 2092 | 48.837.9–58.7 | 33.125.2–36.5 | 41.4 |
| 2093 | 4937.9–56.3 | 33.325.3–36.6 | 41.5 |
| 2094 | 49.238–54.5 | 33.425.5–36.7 | 41.6 |
| 2095 | 49.338–52.9 | 33.625.6–36.8 | 41.7 |
| 2096 | 49.538.1–51.2 | 33.725.7–36.8 | 41.8 |
| 2097 | 49.638.2–49.5 | 33.925.8–36.9 | 41.9 |
| 2098 | 49.738.2–47.8 | 3426–37 | 42 |
| 2099 | 49.838.2–46.5 | 34.226.1–37 | 42 |
| 2100 | 49.938.2–45.3 | 34.326.2–37.1 | 42.1 |
国ごとに見る
知っておきたいこと
- 人口の半数がこの年齢より上、半数が下になる年齢。
- 出典：UN DESA, World Population Prospects 2024。
- 破線は国連予測（中位推計）です。確定した見通しではなく、ひとつのシナリオです。帯はその95% 予測区間を示します。
- 順位は 2023 年に値のある 229 か国を対象に、高い順に数えています。
- 薄い線は、同じ出典による世界全体の値です。
各レイヤーの仕組み、データの出どころ、そこからはわからないこと： 国々の推移