| 年份 | 尼日尔 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 349.6 |
| 2020 | 560.2 |
| 2019 | 501.5 |
| 2018 | 554.7 |
| 2017 | 541.9 |
| 2016 | 536.5 |
| 2015 | 551.3 |
| 2014 | 446.8 |
| 2013 | 407.7 |
| 2012 | 520.3 |
| 2011 | 362.8 |
| 2010 | 494.8 |
| 2009 | 386 |
| 2008 | 496.5 |
| 2007 | 424.8 |
| 2006 | 449.6 |
| 2005 | 436.6 |
| 2004 | 341.5 |
| 2003 | 429.5 |
| 2002 | 422.9 |
| 2001 | 394.4 |
| 2000 | 289.2 |
| 1999 | 380.1 |
| 1998 | 389.5 |
| 1997 | 287.7 |
| 1996 | 291 |
| 1995 | 312.3 |
| 1994 | 267.9 |
| 1993 | 326.2 |
| 1992 | 309.2 |
| 1991 | 333.2 |
| 1990 | 310.3 |
| 1989 | 352.7 |
| 1988 | 475.2 |
| 1987 | 326.5 |
| 1986 | 418.9 |
| 1985 | 425 |
| 1984 | 257.1 |
| 1983 | 401.9 |
| 1982 | 400.3 |
| 1981 | 415.6 |
| 1980 | 457.4 |
| 1979 | 447 |
| 1978 | 431.5 |
| 1977 | 431.3 |
| 1976 | 423.4 |
| 1975 | 346.4 |
| 1974 | 406 |
| 1973 | 323.9 |
| 1972 | 417.6 |
| 1971 | 424.8 |
| 1970 | 390.2 |
| 1969 | 493.7 |
| 1968 | 394 |
| 1967 | 571.3 |
| 1966 | 496.2 |
| 1965 | 467.5 |
| 1964 | 599.3 |
| 1963 | 560.1 |
| 1962 | 547.8 |
| 1961 | 505.2 |
| 1960 | - |