| 年份 | 尼日尔 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 118.8 |
| 2020 | 120.1 |
| 2019 | 120.7 |
| 2018 | 121.3 |
| 2017 | 122 |
| 2016 | 122.9 |
| 2015 | 124 |
| 2014 | 125.4 |
| 2013 | 127.3 |
| 2012 | 129.9 |
| 2011 | 133.1 |
| 2010 | 137.4 |
| 2009 | 142.6 |
| 2008 | 149 |
| 2007 | 156.8 |
| 2006 | 165.8 |
| 2005 | 176 |
| 2004 | 187.3 |
| 2003 | 199.2 |
| 2002 | 210.9 |
| 2001 | 222.2 |
| 2000 | 232.4 |
| 1999 | 242 |
| 1998 | 251.5 |
| 1997 | 261.4 |
| 1996 | 272.5 |
| 1995 | 285 |
| 1994 | 298.3 |
| 1993 | 310.3 |
| 1992 | 319.9 |
| 1991 | 327.9 |
| 1990 | 333.3 |
| 1989 | 338.1 |
| 1988 | 341.5 |
| 1987 | 342.7 |
| 1986 | 341.8 |
| 1985 | 338.8 |
| 1984 | 334.6 |
| 1983 | 330.1 |
| 1982 | 326.4 |
| 1981 | 324.4 |
| 1980 | 324.6 |
| 1979 | 327.1 |
| 1978 | 331.5 |
| 1977 | 336.8 |
| 1976 | 341.5 |
| 1975 | 344.6 |
| 1974 | 345.7 |
| 1973 | 344.7 |
| 1972 | 342.2 |
| 1971 | 338.9 |
| 1970 | 334.8 |
| 1969 | 330.8 |
| 1968 | 326.5 |
| 1967 | 322.5 |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |