| 年份 | 尼日利亚 |
|---|---|
| 2023 | - |
| 2022 | 0.823296 |
| 2021 | 1.18283 |
| 2020 | -4.16206 |
| 2019 | -0.263456 |
| 2018 | -0.590389 |
| 2017 | -1.70987 |
| 2016 | -4.05271 |
| 2015 | 0.0769616 |
| 2014 | 3.55216 |
| 2013 | 3.83237 |
| 2012 | 1.40351 |
| 2011 | 2.43701 |
| 2010 | 5.08187 |
| 2009 | 5.13016 |
| 2008 | 3.89994 |
| 2007 | 3.74169 |
| 2006 | 3.23834 |
| 2005 | 3.60966 |
| 2004 | 6.34504 |
| 2003 | 4.49516 |
| 2002 | 12.2761 |
| 2001 | 3.14642 |
| 2000 | 2.31778 |
| 1999 | -1.94111 |
| 1998 | 0.0324735 |
| 1997 | 0.37252 |
| 1996 | 1.59603 |
| 1995 | -2.5956 |
| 1994 | -4.31075 |
| 1993 | -4.50715 |
| 1992 | 2.02363 |
| 1991 | -2.18037 |
| 1990 | 8.877 |
| 1989 | -0.709919 |
| 1988 | 4.59307 |
| 1987 | 0.574529 |
| 1986 | -2.52667 |
| 1985 | 3.06491 |
| 1984 | -3.53002 |
| 1983 | -13.1282 |
| 1982 | -9.46807 |
| 1981 | -15.6979 |
| 1980 | 1.0607 |
| 1979 | 3.56502 |
| 1978 | -8.57021 |
| 1977 | 2.94904 |
| 1976 | 5.99495 |
| 1975 | -7.78116 |
| 1974 | 8.33888 |
| 1973 | 2.86142 |
| 1972 | 0.990044 |
| 1971 | 11.6883 |
| 1970 | 22.2886 |
| 1969 | 21.5686 |
| 1968 | -3.29621 |
| 1967 | -17.5003 |
| 1966 | -6.30455 |
| 1965 | 2.63822 |
| 1964 | 2.72982 |
| 1963 | 6.30653 |
| 1962 | 1.95445 |
| 1961 | -1.83401 |
| 1960 | - |