| 年份 | 尼日尔 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 60.407 |
| 2020 | 60.472 |
| 2019 | 61.868 |
| 2018 | 61.611 |
| 2017 | 61.176 |
| 2016 | 60.656 |
| 2015 | 60.069 |
| 2014 | 60.006 |
| 2013 | 59.499 |
| 2012 | 59.013 |
| 2011 | 58.263 |
| 2010 | 57.654 |
| 2009 | 56.742 |
| 2008 | 55.85 |
| 2007 | 54.922 |
| 2006 | 54.026 |
| 2005 | 53.077 |
| 2004 | 52.107 |
| 2003 | 51.173 |
| 2002 | 50.139 |
| 2001 | 49.411 |
| 2000 | 48.881 |
| 1999 | 48.245 |
| 1998 | 47.63 |
| 1997 | 47.008 |
| 1996 | 46.184 |
| 1995 | 45.3 |
| 1994 | 44.117 |
| 1993 | 43.283 |
| 1992 | 42.472 |
| 1991 | 41.823 |
| 1990 | 41.564 |
| 1989 | 41.032 |
| 1988 | 40.677 |
| 1987 | 40.325 |
| 1986 | 40.12 |
| 1985 | 40.001 |
| 1984 | 40.017 |
| 1983 | 40.213 |
| 1982 | 40.069 |
| 1981 | 39.831 |
| 1980 | 39.189 |
| 1979 | 38.482 |
| 1978 | 37.7 |
| 1977 | 36.768 |
| 1976 | 36.085 |
| 1975 | 35.516 |
| 1974 | 35.183 |
| 1973 | 34.999 |
| 1972 | 35.092 |
| 1971 | 34.734 |
| 1970 | 35.449 |
| 1969 | 35.696 |
| 1968 | 35.961 |
| 1967 | 36.221 |
| 1966 | 36.184 |
| 1965 | 36.17 |
| 1964 | 36.159 |
| 1963 | 36.142 |
| 1962 | 36.115 |
| 1961 | 36 |
| 1960 | 35.934 |