| 年份 | 尼日尔  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | 3.65十万 | 
| 2021 | 3.28十万 | 
| 2020 | 3.25十万 | 
| 2019 | 3.22十万 | 
| 2018 | 3.16十万 | 
| 2017 | 2.99十万 | 
| 2016 | 2.95十万 | 
| 2015 | 2.84十万 | 
| 2014 | 2.77十万 | 
| 2013 | 2.71十万 | 
| 2012 | 2.68十万 | 
| 2011 | 2.39十万 | 
| 2010 | 2.33十万 | 
| 2009 | 2.16十万 | 
| 2008 | 2.11十万 | 
| 2007 | 1.84十万 | 
| 2006 | 1.73十万 | 
| 2005 | 1.67十万 | 
| 2004 | 1.48十万 | 
| 2003 | 1.53十万 | 
| 2002 | 1.55十万 | 
| 2001 | 1.49十万 | 
| 2000 | 1.37十万 | 
| 1999 | 1.39十万 | 
| 1998 | 1.44十万 | 
| 1997 | 1.27十万 | 
| 1996 | 1.21十万 | 
| 1995 | 1.17十万 | 
| 1994 | 1.13十万 | 
| 1993 | 9.4万 | 
| 1992 | 1.01十万 | 
| 1991 | 1.07十万 | 
| 1990 | 1.14十万 | 
| 1989 | 8.57万 | 
| 1988 | 8.63万 | 
| 1987 | 8.79万 | 
| 1986 | 8.9万 | 
| 1985 | 9万 | 
| 1984 | 9.16万 | 
| 1983 | 1.02十万 | 
| 1982 | 1.01十万 | 
| 1981 | 9.27万 | 
| 1980 | 8.59万 | 
| 1979 | 7.49万 | 
| 1978 | 6.89万 | 
| 1977 | 5.62万 | 
| 1976 | 4.63万 | 
| 1975 | 4.21万 | 
| 1974 | 4.75万 | 
| 1973 | 4.17万 | 
| 1972 | 3.8万 | 
| 1971 | 3.98万 | 
| 1970 | 3.85万 | 
| 1969 | 3.58万 | 
| 1968 | 3.59万 | 
| 1967 | 3.81万 | 
| 1966 | 4.14万 | 
| 1965 | 4.07万 | 
| 1964 | 3.63万 | 
| 1963 | 3.76万 | 
| 1962 | 3.51万 | 
| 1961 | 3.31万 | 
| 1960 | 3.15万 |