| 年份 | 尼日利亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 8.55295 |
| 2020 | 5.07484 |
| 2019 | 8.35322 |
| 2018 | 9.79851 |
| 2017 | 7.80499 |
| 2016 | 4.65773 |
| 2015 | 4.55411 |
| 2014 | 8.78194 |
| 2013 | 11.6227 |
| 2012 | 15.1485 |
| 2011 | 17.5539 |
| 2010 | 13.803 |
| 2009 | 10.6511 |
| 2008 | 17.5903 |
| 2007 | 15.861 |
| 2006 | 16.699 |
| 2005 | 19.3876 |
| 2004 | 16.7755 |
| 2003 | 15.5125 |
| 2002 | 13.6048 |
| 2001 | 18.1012 |
| 2000 | 24.9357 |
| 1999 | 13.0436 |
| 1998 | 11.3596 |
| 1997 | 18.7361 |
| 1996 | 21.4145 |
| 1995 | 21.7989 |
| 1994 | 23.8551 |
| 1993 | 34.2695 |
| 1992 | 20.8862 |
| 1991 | 17.706 |
| 1990 | 25.0746 |
| 1989 | 22.8639 |
| 1988 | 10.3623 |
| 1987 | 11.0208 |
| 1986 | 6.4133 |
| 1985 | 10.4659 |
| 1984 | 9.33483 |
| 1983 | 5.72145 |
| 1982 | 2.58964 |
| 1981 | 4.6285 |
| 1980 | 26.7349 |
| 1979 | 43.1496 |
| 1978 | 19.1239 |
| 1977 | 22.8112 |
| 1976 | 17.6857 |
| 1975 | 20.2632 |
| 1974 | 28.5373 |
| 1973 | 5.10429 |
| 1972 | 3.48789 |
| 1971 | 2.55742 |
| 1970 | 2.40487 |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |