| 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 |