| 年份 | 尼日尔 |
|---|---|
| 2023 | - |
| 2022 | -17.8543 |
| 2021 | -17.0285 |
| 2020 | -16.0373 |
| 2019 | -15.5838 |
| 2018 | -14.9474 |
| 2017 | -13.458 |
| 2016 | -12.1214 |
| 2015 | -16.1907 |
| 2014 | -13.8499 |
| 2013 | -12.3371 |
| 2012 | -12.8848 |
| 2011 | -19.6673 |
| 2010 | -19.5772 |
| 2009 | -19.5566 |
| 2008 | -13.3502 |
| 2007 | -9.36973 |
| 2006 | -8.79049 |
| 2005 | -9.52491 |
| 2004 | -8.44697 |
| 2003 | -6.83434 |
| 2002 | -6.99677 |
| 2001 | -6.10204 |
| 2000 | -6.03337 |
| 1999 | -6.06393 |
| 1998 | -7.07958 |
| 1997 | -6.09857 |
| 1996 | -5.94815 |
| 1995 | -5.70143 |
| 1994 | -7.36047 |
| 1993 | -4.28041 |
| 1992 | -5.14332 |
| 1991 | -6.30026 |
| 1990 | -5.4795 |
| 1989 | -6.69861 |
| 1988 | -5.28868 |
| 1987 | -4.37867 |
| 1986 | -0.691446 |
| 1985 | -12.1547 |
| 1984 | -4.06506 |
| 1983 | -6.08942 |
| 1982 | -15.127 |
| 1981 | -12.0457 |
| 1980 | -13.5419 |
| 1979 | -8.33005 |
| 1978 | -5.29805 |
| 1977 | -9.68693 |
| 1976 | -12.0742 |
| 1975 | -11.7471 |
| 1974 | -16.7024 |
| 1973 | -8.22025 |
| 1972 | -6.2809 |
| 1971 | -3.23322 |
| 1970 | -7.32831 |
| 1969 | -7.11538 |
| 1968 | -6.33513 |
| 1967 | -5.94528 |
| 1966 | -3.63304 |
| 1965 | -4.53072 |
| 1964 | -4.83198 |
| 1963 | -1.01112 |
| 1962 | -3.66422 |
| 1961 | -1.58411 |
| 1960 | -0.304932 |