| 年份 | 尼日利亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 7.24662 |
| 2020 | 7.24662 |
| 2019 | 7.24662 |
| 2018 | 7.24662 |
| 2017 | 7.24662 |
| 2016 | 7.13682 |
| 2015 | 7.13682 |
| 2014 | 7.13682 |
| 2013 | 7.13682 |
| 2012 | 7.13682 |
| 2011 | 7.13682 |
| 2010 | 7.13682 |
| 2009 | 7.13682 |
| 2008 | 7.13682 |
| 2007 | 7.02702 |
| 2006 | 7.02702 |
| 2005 | 7.02702 |
| 2004 | 6.91722 |
| 2003 | 6.80743 |
| 2002 | 6.69763 |
| 2001 | 6.58783 |
| 2000 | 6.36824 |
| 1999 | 6.03885 |
| 1998 | 5.87415 |
| 1997 | 5.81925 |
| 1996 | 5.70945 |
| 1995 | 5.70945 |
| 1994 | 5.38006 |
| 1993 | 5.27027 |
| 1992 | 4.83108 |
| 1991 | 4.72128 |
| 1990 | 4.39189 |
| 1989 | 4.39189 |
| 1988 | 4.39189 |
| 1987 | 4.39189 |
| 1986 | 4.39189 |
| 1985 | 4.28209 |
| 1984 | 4.0625 |
| 1983 | 3.8429 |
| 1982 | 3.8429 |
| 1981 | 3.8429 |
| 1980 | 3.8429 |
| 1979 | 3.7331 |
| 1978 | 3.51351 |
| 1977 | 3.51351 |
| 1976 | 3.45861 |
| 1975 | 3.45861 |
| 1974 | 3.45861 |
| 1973 | 3.45861 |
| 1972 | 3.45861 |
| 1971 | 3.45861 |
| 1970 | 3.45861 |
| 1969 | 3.40371 |
| 1968 | 3.29392 |
| 1967 | 3.29392 |
| 1966 | 3.7331 |
| 1965 | 3.8429 |
| 1964 | 3.8429 |
| 1963 | 3.8429 |
| 1962 | 3.8429 |
| 1961 | 3.8429 |
| 1960 | - |