| 年份 | 塞拉利昂 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 9.03701 |
| 2020 | 8.22978 |
| 2019 | 7.4908 |
| 2018 | 8.55533 |
| 2017 | 14.9365 |
| 2016 | 14.6733 |
| 2015 | 10.5714 |
| 2014 | 8.02771 |
| 2013 | 7.22687 |
| 2012 | 9.77052 |
| 2011 | 10.987 |
| 2010 | 10.5289 |
| 2009 | 12.2692 |
| 2008 | 11.6116 |
| 2007 | 12.2555 |
| 2006 | 9.42718 |
| 2005 | 9.902 |
| 2004 | 11.1023 |
| 2003 | 12.8768 |
| 2002 | 8.43552 |
| 2001 | 8.05231 |
| 2000 | 14.2567 |
| 1999 | 13.3683 |
| 1998 | 21.662 |
| 1997 | 16.2135 |
| 1996 | 14.6082 |
| 1995 | 15.8876 |
| 1994 | 11.3607 |
| 1993 | 11.7835 |
| 1992 | 18.3516 |
| 1991 | 15.6144 |
| 1990 | 19.7973 |
| 1989 | 12.5138 |
| 1988 | 10.0049 |
| 1987 | 14.293 |
| 1986 | 22.0277 |
| 1985 | 9.6084 |
| 1984 | 9.30025 |
| 1983 | 10.2813 |
| 1982 | 10.5387 |
| 1981 | 9.02759 |
| 1980 | 10.4874 |
| 1979 | 8.85957 |
| 1978 | 11.2944 |
| 1977 | 15.2783 |
| 1976 | 10.2263 |
| 1975 | 10.7764 |
| 1974 | 9.27055 |
| 1973 | 8.18386 |
| 1972 | 7.49334 |
| 1971 | 7.76129 |
| 1970 | 7.84917 |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |