| 年份 | 尼日尔  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | - | 
| 2021 | 4.88873 | 
| 2020 | 4.9284 | 
| 2019 | 4.74234 | 
| 2018 | 4.93099 | 
| 2017 | 7.97567 | 
| 2016 | 8.6396 | 
| 2015 | 8.71509 | 
| 2014 | 7.36981 | 
| 2013 | 7.04364 | 
| 2012 | 7.25651 | 
| 2011 | 6.68949 | 
| 2010 | 6.47924 | 
| 2009 | 7.66292 | 
| 2008 | 7.5717 | 
| 2007 | 7.86422 | 
| 2006 | 6.53979 | 
| 2005 | 6.93109 | 
| 2004 | 7.37654 | 
| 2003 | 9.23078 | 
| 2002 | 6.97803 | 
| 2001 | 6.50698 | 
| 2000 | 7.23578 | 
| 1999 | 5.83537 | 
| 1998 | 8.6296 | 
| 1997 | 9.39694 | 
| 1996 | 9.35246 | 
| 1995 | 9.59597 | 
| 1994 | 7.51751 | 
| 1993 | 3.95215 | 
| 1992 | 4.14078 | 
| 1991 | 4.00384 | 
| 1990 | 3.6884 | 
| 1989 | 4.72031 | 
| 1988 | 4.27251 | 
| 1987 | 3.92723 | 
| 1986 | 4.59214 | 
| 1985 | 3.79019 | 
| 1984 | 4.90758 | 
| 1983 | 4.08565 | 
| 1982 | 5.34638 | 
| 1981 | 3.47043 | 
| 1980 | 3.33819 | 
| 1979 | 3.21431 | 
| 1978 | 3.92906 | 
| 1977 | 5.2276 | 
| 1976 | 3.58416 | 
| 1975 | 3.89527 | 
| 1974 | 2.87006 | 
| 1973 | 2.75747 | 
| 1972 | 2.0001 | 
| 1971 | 1.7981 | 
| 1970 | 2.15131 | 
| 1969 | - | 
| 1968 | - | 
| 1967 | - | 
| 1966 | - | 
| 1965 | - | 
| 1964 | - | 
| 1963 | - | 
| 1962 | - | 
| 1961 | - | 
| 1960 | - |