| 年份 | 尼日尔 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 61.576 |
| 2020 | 61.451 |
| 2019 | 62.897 |
| 2018 | 62.454 |
| 2017 | 62.16 |
| 2016 | 61.629 |
| 2015 | 61.083 |
| 2014 | 60.786 |
| 2013 | 60.239 |
| 2012 | 59.65 |
| 2011 | 58.994 |
| 2010 | 58.367 |
| 2009 | 57.396 |
| 2008 | 56.508 |
| 2007 | 55.553 |
| 2006 | 54.596 |
| 2005 | 53.59 |
| 2004 | 52.589 |
| 2003 | 51.434 |
| 2002 | 50.562 |
| 2001 | 49.841 |
| 2000 | 49.322 |
| 1999 | 48.738 |
| 1998 | 48.191 |
| 1997 | 47.505 |
| 1996 | 46.676 |
| 1995 | 45.774 |
| 1994 | 44.714 |
| 1993 | 43.817 |
| 1992 | 42.947 |
| 1991 | 42.218 |
| 1990 | 41.852 |
| 1989 | 41.221 |
| 1988 | 40.79 |
| 1987 | 40.433 |
| 1986 | 40.129 |
| 1985 | 40.031 |
| 1984 | 40.059 |
| 1983 | 40.359 |
| 1982 | 40.301 |
| 1981 | 40.165 |
| 1980 | 39.678 |
| 1979 | 39.202 |
| 1978 | 38.45 |
| 1977 | 37.644 |
| 1976 | 36.976 |
| 1975 | 36.588 |
| 1974 | 36.003 |
| 1973 | 35.704 |
| 1972 | 35.632 |
| 1971 | 35.293 |
| 1970 | 36.062 |
| 1969 | 36.354 |
| 1968 | 36.611 |
| 1967 | 36.83 |
| 1966 | 36.807 |
| 1965 | 36.753 |
| 1964 | 36.744 |
| 1963 | 36.736 |
| 1962 | 36.639 |
| 1961 | 36.556 |
| 1960 | 36.404 |