| 年份 | 塞拉利昂 |
|---|---|
| 2023 | - |
| 2022 | 1.23255 |
| 2021 | 1.79688 |
| 2020 | -4.19655 |
| 2019 | 2.82676 |
| 2018 | 1.05477 |
| 2017 | 1.27195 |
| 2016 | 3.80454 |
| 2015 | -22.3833 |
| 2014 | 1.98463 |
| 2013 | 18.0147 |
| 2012 | 12.2116 |
| 2011 | 3.19322 |
| 2010 | 3.7075 |
| 2009 | 0.423333 |
| 2008 | 2.80994 |
| 2007 | 5.62422 |
| 2006 | 2.01356 |
| 2005 | 1.59921 |
| 2004 | 2.96847 |
| 2003 | 5.17063 |
| 2002 | 19.5577 |
| 2001 | -11.61 |
| 2000 | 4.11855 |
| 1999 | -2.53059 |
| 1998 | 0.756933 |
| 1997 | -7.10907 |
| 1996 | 1.21031 |
| 1995 | -8.19541 |
| 1994 | -2.38514 |
| 1993 | 1.51324 |
| 1992 | -17.5707 |
| 1991 | 1.11806 |
| 1990 | -0.621751 |
| 1989 | -1.76328 |
| 1988 | -9.56209 |
| 1987 | 4.38069 |
| 1986 | -1.22702 |
| 1985 | -7.41141 |
| 1984 | 1.80778 |
| 1983 | -4.19345 |
| 1982 | 2.62924 |
| 1981 | 0.797195 |
| 1980 | 2.74366 |
| 1979 | 2.4571 |
| 1978 | 0.412916 |
| 1977 | -1.82457 |
| 1976 | -2.27037 |
| 1975 | -0.229581 |
| 1974 | 1.54948 |
| 1973 | 0.321156 |
| 1972 | -0.99603 |
| 1971 | 1.49935 |
| 1970 | 6.52295 |
| 1969 | 6.43328 |
| 1968 | 0.0357736 |
| 1967 | -1.89772 |
| 1966 | -0.245559 |
| 1965 | 5.14377 |
| 1964 | 4.70331 |
| 1963 | -0.137354 |
| 1962 | 2.70501 |
| 1961 | 0.0801644 |
| 1960 | - |