| 年份 | 尼日尔 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 62.794 |
| 2020 | 62.454 |
| 2019 | 63.939 |
| 2018 | 63.295 |
| 2017 | 63.145 |
| 2016 | 62.599 |
| 2015 | 62.095 |
| 2014 | 61.544 |
| 2013 | 60.952 |
| 2012 | 60.252 |
| 2011 | 59.692 |
| 2010 | 59.041 |
| 2009 | 58.006 |
| 2008 | 57.118 |
| 2007 | 56.133 |
| 2006 | 55.11 |
| 2005 | 54.042 |
| 2004 | 53.007 |
| 2003 | 51.63 |
| 2002 | 50.915 |
| 2001 | 50.197 |
| 2000 | 49.686 |
| 1999 | 49.15 |
| 1998 | 48.668 |
| 1997 | 47.917 |
| 1996 | 47.079 |
| 1995 | 46.154 |
| 1994 | 45.219 |
| 1993 | 44.255 |
| 1992 | 43.325 |
| 1991 | 42.514 |
| 1990 | 42.039 |
| 1989 | 41.311 |
| 1988 | 40.809 |
| 1987 | 40.45 |
| 1986 | 40.054 |
| 1985 | 39.976 |
| 1984 | 40.016 |
| 1983 | 40.414 |
| 1982 | 40.437 |
| 1981 | 40.4 |
| 1980 | 40.063 |
| 1979 | 39.815 |
| 1978 | 39.095 |
| 1977 | 38.416 |
| 1976 | 37.763 |
| 1975 | 37.556 |
| 1974 | 36.722 |
| 1973 | 36.311 |
| 1972 | 36.082 |
| 1971 | 35.757 |
| 1970 | 36.576 |
| 1969 | 36.912 |
| 1968 | 37.16 |
| 1967 | 37.343 |
| 1966 | 37.335 |
| 1965 | 37.244 |
| 1964 | 37.238 |
| 1963 | 37.24 |
| 1962 | 37.078 |
| 1961 | 37.027 |
| 1960 | 36.799 |