| 年份 | 尼日尔 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | - |
| 2020 | - |
| 2019 | - |
| 2018 | - |
| 2017 | - |
| 2016 | 2.4655 |
| 2015 | 3.5241 |
| 2014 | 3.7668 |
| 2013 | 4.14999 |
| 2012 | 3.48425 |
| 2011 | 3.6424 |
| 2010 | 4.46749 |
| 2009 | 4.97856 |
| 2008 | 6.51498 |
| 2007 | 4.77629 |
| 2006 | 4.74281 |
| 2005 | 5.21259 |
| 2004 | 5.11935 |
| 2003 | 7.22005 |
| 2002 | 8.51204 |
| 2001 | 10.0614 |
| 2000 | 12.0762 |
| 1999 | 12.4007 |
| 1998 | 12.7452 |
| 1997 | 13.116 |
| 1996 | 19.0392 |
| 1995 | 17.534 |
| 1994 | - |
| 1993 | 18.3282 |
| 1992 | 15.1982 |
| 1991 | 13.6101 |
| 1990 | 13.1997 |
| 1989 | 12.5797 |
| 1988 | - |
| 1987 | 14.9612 |
| 1986 | 14.9999 |
| 1985 | 14.9985 |
| 1984 | 14.2553 |
| 1983 | 14.7015 |
| 1982 | 15 |
| 1981 | 14.5309 |
| 1980 | 13.5534 |
| 1979 | 14.2741 |
| 1978 | 11.9531 |
| 1977 | 12.4798 |
| 1976 | 12.9589 |
| 1975 | 15.9287 |
| 1974 | 17.8495 |
| 1973 | 18.2506 |
| 1972 | 18.2336 |
| 1971 | 18.9244 |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |