| 年份 | 尼日尔 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 2.81百万 |
| 2020 | 2.9百万 |
| 2019 | 2.67百万 |
| 2018 | 2.6百万 |
| 2017 | 2.77百万 |
| 2016 | 2.61百万 |
| 2015 | 2.44百万 |
| 2014 | 2.28百万 |
| 2013 | 2.17百万 |
| 2012 | 2.05百万 |
| 2011 | 1.91百万 |
| 2010 | 1.73百万 |
| 2009 | 1.55百万 |
| 2008 | 1.39百万 |
| 2007 | 1.24百万 |
| 2006 | 1.13百万 |
| 2005 | 1.06百万 |
| 2004 | 9.8十万 |
| 2003 | 8.58十万 |
| 2002 | 7.61十万 |
| 2001 | 6.57十万 |
| 2000 | 5.79十万 |
| 1999 | 5.3十万 |
| 1998 | 4.82十万 |
| 1997 | 4.64十万 |
| 1996 | 4.41十万 |
| 1995 | 4.27十万 |
| 1994 | 4.11十万 |
| 1993 | 3.86十万 |
| 1992 | 3.7十万 |
| 1991 | 3.69十万 |
| 1990 | 3.45十万 |
| 1989 | 3.25十万 |
| 1988 | 3.01十万 |
| 1987 | 2.94十万 |
| 1986 | 2.76十万 |
| 1985 | 2.51十万 |
| 1984 | 2.5十万 |
| 1983 | 2.42十万 |
| 1982 | 2.36十万 |
| 1981 | 2.29十万 |
| 1980 | 2.1十万 |
| 1979 | 1.87十万 |
| 1978 | 1.76十万 |
| 1977 | 1.6十万 |
| 1976 | 1.42十万 |
| 1975 | 1.21十万 |
| 1974 | 1.1十万 |
| 1973 | 1.01十万 |
| 1972 | 9.45万 |
| 1971 | 8.86万 |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |