| 年份 | 尼日尔 |
|---|---|
| 2023 | - |
| 2022 | 6.3十万 |
| 2021 | 6.11十万 |
| 2020 | 5.93十万 |
| 2019 | 5.71十万 |
| 2018 | 5.47十万 |
| 2017 | 5.23十万 |
| 2016 | 5十万 |
| 2015 | 4.78十万 |
| 2014 | 4.62十万 |
| 2013 | 4.49十万 |
| 2012 | 4.33十万 |
| 2011 | 4.15十万 |
| 2010 | 3.97十万 |
| 2009 | 3.79十万 |
| 2008 | 3.62十万 |
| 2007 | 3.45十万 |
| 2006 | 3.31十万 |
| 2005 | 3.17十万 |
| 2004 | 3.04十万 |
| 2003 | 2.92十万 |
| 2002 | 2.81十万 |
| 2001 | 2.7十万 |
| 2000 | 2.6十万 |
| 1999 | 2.51十万 |
| 1998 | 2.41十万 |
| 1997 | 2.32十万 |
| 1996 | 2.24十万 |
| 1995 | 2.15十万 |
| 1994 | 2.07十万 |
| 1993 | 1.99十万 |
| 1992 | 1.92十万 |
| 1991 | 1.85十万 |
| 1990 | 1.78十万 |
| 1989 | 1.71十万 |
| 1988 | 1.64十万 |
| 1987 | 1.58十万 |
| 1986 | 1.51十万 |
| 1985 | 1.45十万 |
| 1984 | 1.39十万 |
| 1983 | 1.33十万 |
| 1982 | 1.28十万 |
| 1981 | 1.22十万 |
| 1980 | 1.17十万 |
| 1979 | 1.11十万 |
| 1978 | 1.06十万 |
| 1977 | 1.01十万 |
| 1976 | 9.67万 |
| 1975 | 9.24万 |
| 1974 | 8.83万 |
| 1973 | 8.44万 |
| 1972 | 8.07万 |
| 1971 | 7.72万 |
| 1970 | 7.37万 |
| 1969 | 7.01万 |
| 1968 | 6.66万 |
| 1967 | 6.32万 |
| 1966 | 5.97万 |
| 1965 | 5.63万 |
| 1964 | 5.28万 |
| 1963 | 4.93万 |
| 1962 | 4.59万 |
| 1961 | 4.25万 |
| 1960 | 3.93万 |