| 年份 | 塞拉利昂 |
|---|---|
| 2023 | - |
| 2022 | 9.72799 |
| 2021 | 9.65197 |
| 2020 | 9.57337 |
| 2019 | 9.50025 |
| 2018 | 9.43778 |
| 2017 | 9.37587 |
| 2016 | 9.30957 |
| 2015 | 9.24507 |
| 2014 | 9.18555 |
| 2013 | 9.1342 |
| 2012 | 9.10255 |
| 2011 | 9.08652 |
| 2010 | 9.07501 |
| 2009 | 9.06439 |
| 2008 | 9.04717 |
| 2007 | 9.01471 |
| 2006 | 8.97236 |
| 2005 | 8.92747 |
| 2004 | 8.88218 |
| 2003 | 8.8442 |
| 2002 | 8.81433 |
| 2001 | 8.78941 |
| 2000 | 8.77019 |
| 1999 | 8.77714 |
| 1998 | 8.78517 |
| 1997 | 8.76669 |
| 1996 | 8.74561 |
| 1995 | 8.72505 |
| 1994 | 8.7034 |
| 1993 | 8.68766 |
| 1992 | 8.68156 |
| 1991 | 8.67454 |
| 1990 | 8.66327 |
| 1989 | 8.64977 |
| 1988 | 8.63223 |
| 1987 | 8.60332 |
| 1986 | 8.56539 |
| 1985 | 8.52116 |
| 1984 | 8.46459 |
| 1983 | 8.39921 |
| 1982 | 8.33352 |
| 1981 | 8.26749 |
| 1980 | 8.19997 |
| 1979 | 8.13349 |
| 1978 | 8.06464 |
| 1977 | 7.99674 |
| 1976 | 7.93822 |
| 1975 | 7.89129 |
| 1974 | 7.82146 |
| 1973 | 7.76631 |
| 1972 | 7.83537 |
| 1971 | 7.98536 |
| 1970 | 8.1446 |
| 1969 | 8.35459 |
| 1968 | 8.56337 |
| 1967 | 8.63617 |
| 1966 | 8.61646 |
| 1965 | 8.59311 |
| 1964 | 8.57608 |
| 1963 | 8.58481 |
| 1962 | 8.61915 |
| 1961 | 8.66628 |
| 1960 | 8.71304 |