| 年份 | 尼日尔 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 45.293 |
| 2020 | 45.588 |
| 2019 | 45.859 |
| 2018 | 46.127 |
| 2017 | 46.351 |
| 2016 | 46.52 |
| 2015 | 46.558 |
| 2014 | 46.752 |
| 2013 | 47.123 |
| 2012 | 47.398 |
| 2011 | 47.99 |
| 2010 | 48.51 |
| 2009 | 48.882 |
| 2008 | 49.297 |
| 2007 | 49.694 |
| 2006 | 50.096 |
| 2005 | 50.63 |
| 2004 | 51.058 |
| 2003 | 51.456 |
| 2002 | 51.841 |
| 2001 | 52.219 |
| 2000 | 52.659 |
| 1999 | 52.957 |
| 1998 | 53.399 |
| 1997 | 53.659 |
| 1996 | 53.93 |
| 1995 | 54.068 |
| 1994 | 53.953 |
| 1993 | 54.254 |
| 1992 | 54.492 |
| 1991 | 54.816 |
| 1990 | 55.165 |
| 1989 | 55.225 |
| 1988 | 55.618 |
| 1987 | 56.212 |
| 1986 | 56.363 |
| 1985 | 56.895 |
| 1984 | 57.126 |
| 1983 | 56.9 |
| 1982 | 57.081 |
| 1981 | 57.251 |
| 1980 | 57.072 |
| 1979 | 56.68 |
| 1978 | 56.237 |
| 1977 | 55.722 |
| 1976 | 55.645 |
| 1975 | 55.651 |
| 1974 | 55.627 |
| 1973 | 55.579 |
| 1972 | 55.564 |
| 1971 | 55.659 |
| 1970 | 55.718 |
| 1969 | 55.808 |
| 1968 | 55.995 |
| 1967 | 56.322 |
| 1966 | 56.581 |
| 1965 | 56.784 |
| 1964 | 57.192 |
| 1963 | 57.45 |
| 1962 | 57.683 |
| 1961 | 57.903 |
| 1960 | 58.121 |