| 年份 | 尼日尔 |
|---|---|
| 2023 | - |
| 2022 | 38.29亿 |
| 2021 | 35.78亿 |
| 2020 | 33.62亿 |
| 2019 | 32.74亿 |
| 2018 | 30.81亿 |
| 2017 | 28.18亿 |
| 2016 | 25.26亿 |
| 2015 | 29.5亿 |
| 2014 | 27.47亿 |
| 2013 | 26.17亿 |
| 2012 | 24.76亿 |
| 2011 | 25.87亿 |
| 2010 | 25.09亿 |
| 2009 | 22.5亿 |
| 2008 | 17.02亿 |
| 2007 | 12.77亿 |
| 2006 | 12.18亿 |
| 2005 | 12.27亿 |
| 2004 | 11.5亿 |
| 2003 | 10.79亿 |
| 2002 | 10.79亿 |
| 2001 | 10.71亿 |
| 2000 | 9.76亿 |
| 1999 | 9.09亿 |
| 1998 | 9.98亿 |
| 1997 | 9.74亿 |
| 1996 | 9.53亿 |
| 1995 | 9.39亿 |
| 1994 | 8.6亿 |
| 1993 | 5.99亿 |
| 1992 | 4.44亿 |
| 1991 | 7.63亿 |
| 1990 | 7.55亿 |
| 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 | - |