| 年份 | 尼日利亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 5.1137 |
| 2020 | 8.70769 |
| 2019 | 5.572 |
| 2018 | 5.60433 |
| 2017 | 4.40332 |
| 2016 | 5.38428 |
| 2015 | 5.93516 |
| 2014 | 6.46449 |
| 2013 | 7.15522 |
| 2012 | 8.22818 |
| 2011 | 8.57215 |
| 2010 | 8.8481 |
| 2009 | 8.64995 |
| 2008 | 9.42896 |
| 2007 | 9.44834 |
| 2006 | 5.12584 |
| 2005 | 4.54455 |
| 2004 | 4.78764 |
| 2003 | 0.951747 |
| 2002 | 1.34049 |
| 2001 | 1.99062 |
| 2000 | 2.12344 |
| 1999 | 1.38338 |
| 1998 | 1.37567 |
| 1997 | 0.912571 |
| 1996 | 0.911235 |
| 1995 | 1.1662 |
| 1994 | 1.76902 |
| 1993 | 2.14845 |
| 1992 | 2.04763 |
| 1991 | 1.22098 |
| 1990 | 1.22014 |
| 1989 | 1.31522 |
| 1988 | 1.5527 |
| 1987 | 1.63271 |
| 1986 | 1.92924 |
| 1985 | 1.93984 |
| 1984 | 2.09134 |
| 1983 | 2.07712 |
| 1982 | 2.10643 |
| 1981 | 1.77641 |
| 1980 | - |
| 1979 | - |
| 1978 | - |
| 1977 | - |
| 1976 | - |
| 1975 | - |
| 1974 | - |
| 1973 | - |
| 1972 | - |
| 1971 | - |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |