| 年份 | 尼日尔 |
|---|---|
| 2023 | - |
| 2022 | 7.20713 |
| 2021 | 5.59645 |
| 2020 | 7.57347 |
| 2019 | 8.89229 |
| 2018 | 8.47798 |
| 2017 | 9.27684 |
| 2016 | 8.29833 |
| 2015 | - |
| 2014 | 5.69637 |
| 2013 | 5.08372 |
| 2012 | 9.50963 |
| 2011 | 6.2628 |
| 2010 | 5.98089 |
| 2009 | 4.10344 |
| 2008 | 4.38355 |
| 2007 | - |
| 2006 | - |
| 2005 | 4.82807 |
| 2004 | 5.25791 |
| 2003 | 5.19311 |
| 2002 | 5.17838 |
| 2001 | 7.41154 |
| 2000 | 6.67326 |
| 1999 | 6.22424 |
| 1998 | 6.13381 |
| 1997 | 5.87824 |
| 1996 | 6.67266 |
| 1995 | 6.43073 |
| 1994 | - |
| 1993 | - |
| 1992 | - |
| 1991 | - |
| 1990 | - |
| 1989 | - |
| 1988 | - |
| 1987 | - |
| 1986 | - |
| 1985 | - |
| 1984 | - |
| 1983 | - |
| 1982 | - |
| 1981 | - |
| 1980 | - |
| 1979 | - |
| 1978 | - |
| 1977 | - |
| 1976 | - |
| 1975 | - |
| 1974 | - |
| 1973 | - |
| 1972 | - |
| 1971 | - |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |