| 年份 | 塞拉利昂 |
|---|---|
| 2023 | - |
| 2022 | 3.91517 |
| 2021 | 3.86918 |
| 2020 | 3.82545 |
| 2019 | 3.78276 |
| 2018 | 3.74523 |
| 2017 | 3.71468 |
| 2016 | 3.68649 |
| 2015 | 3.65912 |
| 2014 | 3.63445 |
| 2013 | 3.61117 |
| 2012 | 3.58541 |
| 2011 | 3.55846 |
| 2010 | 3.53167 |
| 2009 | 3.50214 |
| 2008 | 3.47129 |
| 2007 | 3.44277 |
| 2006 | 3.41654 |
| 2005 | 3.39204 |
| 2004 | 3.36962 |
| 2003 | 3.34822 |
| 2002 | 3.32965 |
| 2001 | 3.3163 |
| 2000 | 3.31136 |
| 1999 | 3.29675 |
| 1998 | 3.27993 |
| 1997 | 3.31632 |
| 1996 | 3.39252 |
| 1995 | 3.47186 |
| 1994 | 3.57742 |
| 1993 | 3.69058 |
| 1992 | 3.74035 |
| 1991 | 3.74397 |
| 1990 | 3.7449 |
| 1989 | 3.74702 |
| 1988 | 3.76035 |
| 1987 | 3.78636 |
| 1986 | 3.8192 |
| 1985 | 3.85243 |
| 1984 | 3.88357 |
| 1983 | 3.91136 |
| 1982 | 3.93558 |
| 1981 | 3.95891 |
| 1980 | 3.98313 |
| 1979 | 4.00705 |
| 1978 | 4.02862 |
| 1977 | 4.04901 |
| 1976 | 4.07117 |
| 1975 | 4.09627 |
| 1974 | 4.1228 |
| 1973 | 4.14841 |
| 1972 | 4.1724 |
| 1971 | 4.19504 |
| 1970 | 4.21588 |
| 1969 | 4.23521 |
| 1968 | 4.25364 |
| 1967 | 4.27154 |
| 1966 | 4.2884 |
| 1965 | 4.30342 |
| 1964 | 4.31759 |
| 1963 | 4.33087 |
| 1962 | 4.34207 |
| 1961 | 4.35155 |
| 1960 | 4.3598 |