| 年份 | 尼日利亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 23.5665 |
| 2020 | 23.7458 |
| 2019 | 23.9251 |
| 2018 | 24.1044 |
| 2017 | 24.2837 |
| 2016 | 24.463 |
| 2015 | 24.6423 |
| 2014 | 24.8216 |
| 2013 | 25.0009 |
| 2012 | 25.1802 |
| 2011 | 25.3595 |
| 2010 | 25.5388 |
| 2009 | 25.7181 |
| 2008 | 25.8974 |
| 2007 | 26.0767 |
| 2006 | 26.256 |
| 2005 | 26.4353 |
| 2004 | 26.6146 |
| 2003 | 26.7939 |
| 2002 | 26.9733 |
| 2001 | 27.1526 |
| 2000 | 27.3319 |
| 1999 | 27.5112 |
| 1998 | 27.6905 |
| 1997 | 27.8698 |
| 1996 | 28.0491 |
| 1995 | 28.2284 |
| 1994 | 28.4077 |
| 1993 | 28.587 |
| 1992 | 28.7663 |
| 1991 | 28.9456 |
| 1990 | 29.1249 |
| 1989 | - |
| 1988 | - |
| 1987 | - |
| 1986 | - |
| 1985 | - |
| 1984 | - |
| 1983 | - |
| 1982 | - |
| 1981 | - |
| 1980 | - |
| 1979 | - |
| 1978 | - |
| 1977 | - |
| 1976 | - |
| 1975 | - |
| 1974 | - |
| 1973 | - |
| 1972 | - |
| 1971 | - |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |