| 年份 | 尼日利亚 |
|---|---|
| 2023 | - |
| 2022 | 3.25168 |
| 2021 | 3.64719 |
| 2020 | -1.79425 |
| 2019 | 2.20843 |
| 2018 | 1.92276 |
| 2017 | 0.805887 |
| 2016 | -1.61687 |
| 2015 | 2.65269 |
| 2014 | 6.30972 |
| 2013 | 6.67134 |
| 2012 | 4.23006 |
| 2011 | 5.30792 |
| 2010 | 8.00566 |
| 2009 | 8.03693 |
| 2008 | 6.76447 |
| 2007 | 6.59113 |
| 2006 | 6.05943 |
| 2005 | 6.43852 |
| 2004 | 9.25056 |
| 2003 | 7.3472 |
| 2002 | 15.3292 |
| 2001 | 5.91768 |
| 2000 | 5.01593 |
| 1999 | 0.584127 |
| 1998 | 2.58125 |
| 1997 | 2.9371 |
| 1996 | 4.19592 |
| 1995 | -0.0726648 |
| 1994 | -1.81492 |
| 1993 | -2.03512 |
| 1992 | 4.63119 |
| 1991 | 0.358353 |
| 1990 | 11.7769 |
| 1989 | 1.91938 |
| 1988 | 7.33403 |
| 1987 | 3.20013 |
| 1986 | 0.0609453 |
| 1985 | 5.91303 |
| 1984 | -1.11562 |
| 1983 | -10.9241 |
| 1982 | -6.80339 |
| 1981 | -13.1279 |
| 1980 | 4.20483 |
| 1979 | 6.75943 |
| 1978 | -5.76416 |
| 1977 | 6.02412 |
| 1976 | 9.04235 |
| 1975 | -5.22775 |
| 1974 | 11.1607 |
| 1973 | 5.39276 |
| 1972 | 3.36426 |
| 1971 | 14.2375 |
| 1970 | 25.0072 |
| 1969 | 24.1974 |
| 1968 | -1.24836 |
| 1967 | -15.7436 |
| 1966 | -4.25051 |
| 1965 | 4.88498 |
| 1964 | 4.95049 |
| 1963 | 8.57862 |
| 1962 | 4.10299 |
| 1961 | 0.191795 |
| 1960 | - |