| 年份 | 尼日利亚 |
|---|---|
| 2023 | - |
| 2022 | 16.2251 |
| 2021 | 16.363 |
| 2020 | 16.4925 |
| 2019 | 16.634 |
| 2018 | 16.7887 |
| 2017 | 16.961 |
| 2016 | 17.1484 |
| 2015 | 17.3331 |
| 2014 | 17.5059 |
| 2013 | 17.6647 |
| 2012 | 17.7904 |
| 2011 | 17.8744 |
| 2010 | 17.9327 |
| 2009 | 17.965 |
| 2008 | 17.9753 |
| 2007 | 17.9826 |
| 2006 | 17.9823 |
| 2005 | 17.9591 |
| 2004 | 17.9128 |
| 2003 | 17.8323 |
| 2002 | 17.7331 |
| 2001 | 17.6554 |
| 2000 | 17.6051 |
| 1999 | 17.5837 |
| 1998 | 17.5958 |
| 1997 | 17.614 |
| 1996 | 17.6084 |
| 1995 | 17.5874 |
| 1994 | 17.5739 |
| 1993 | 17.5683 |
| 1992 | 17.5737 |
| 1991 | 17.6077 |
| 1990 | 17.6872 |
| 1989 | 17.8134 |
| 1988 | 17.9861 |
| 1987 | 18.1847 |
| 1986 | 18.3685 |
| 1985 | 18.5284 |
| 1984 | 18.6645 |
| 1983 | 18.7589 |
| 1982 | 18.8072 |
| 1981 | 18.8226 |
| 1980 | 18.8097 |
| 1979 | 18.7604 |
| 1978 | 18.649 |
| 1977 | 18.5032 |
| 1976 | 18.3489 |
| 1975 | 18.1748 |
| 1974 | 17.9932 |
| 1973 | 17.8354 |
| 1972 | 17.708 |
| 1971 | 17.6046 |
| 1970 | 17.5395 |
| 1969 | 17.5003 |
| 1968 | 17.4596 |
| 1967 | 17.4194 |
| 1966 | 17.3689 |
| 1965 | 17.3045 |
| 1964 | 17.2304 |
| 1963 | 17.1496 |
| 1962 | 17.0739 |
| 1961 | 17.0074 |
| 1960 | 16.9492 |