| 年份 | 塞拉利昂  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | 4.79518 | 
| 2021 | 4.75234 | 
| 2020 | 4.71421 | 
| 2019 | 4.67967 | 
| 2018 | 4.64329 | 
| 2017 | 4.60569 | 
| 2016 | 4.57105 | 
| 2015 | 4.53735 | 
| 2014 | 4.50521 | 
| 2013 | 4.47995 | 
| 2012 | 4.46365 | 
| 2011 | 4.45095 | 
| 2010 | 4.43905 | 
| 2009 | 4.42911 | 
| 2008 | 4.41975 | 
| 2007 | 4.40573 | 
| 2006 | 4.38885 | 
| 2005 | 4.37135 | 
| 2004 | 4.34875 | 
| 2003 | 4.32405 | 
| 2002 | 4.30257 | 
| 2001 | 4.28317 | 
| 2000 | 4.26317 | 
| 1999 | 4.2442 | 
| 1998 | 4.22258 | 
| 1997 | 4.19945 | 
| 1996 | 4.18089 | 
| 1995 | 4.17026 | 
| 1994 | 4.14237 | 
| 1993 | 4.12691 | 
| 1992 | 4.18825 | 
| 1991 | 4.29168 | 
| 1990 | 4.39254 | 
| 1989 | 4.52353 | 
| 1988 | 4.64716 | 
| 1987 | 4.69001 | 
| 1986 | 4.68698 | 
| 1985 | 4.68122 | 
| 1984 | 4.67675 | 
| 1983 | 4.685 | 
| 1982 | 4.70753 | 
| 1981 | 4.73779 | 
| 1980 | 4.76849 | 
| 1979 | 4.79774 | 
| 1978 | 4.82469 | 
| 1977 | 4.84864 | 
| 1976 | 4.87357 | 
| 1975 | 4.90239 | 
| 1974 | 4.93254 | 
| 1973 | 4.95997 | 
| 1972 | 4.98518 | 
| 1971 | 5.01056 | 
| 1970 | 5.03649 | 
| 1969 | 5.06207 | 
| 1968 | 5.08682 | 
| 1967 | 5.11041 | 
| 1966 | 5.13194 | 
| 1965 | 5.15076 | 
| 1964 | 5.16738 | 
| 1963 | 5.18152 | 
| 1962 | 5.19274 | 
| 1961 | 5.20199 | 
| 1960 | 5.20973 |