| 年份 | 冈比亚 |
|---|---|
| 2023 | - |
| 2022 | 2.47215 |
| 2021 | 2.52879 |
| 2020 | 2.56215 |
| 2019 | 2.58269 |
| 2018 | 2.64138 |
| 2017 | 2.72349 |
| 2016 | 2.80405 |
| 2015 | 2.88682 |
| 2014 | 2.97433 |
| 2013 | 3.05121 |
| 2012 | 3.09453 |
| 2011 | 3.09704 |
| 2010 | 3.10116 |
| 2009 | 3.11365 |
| 2008 | 3.10499 |
| 2007 | 3.08346 |
| 2006 | 3.02105 |
| 2005 | 2.94241 |
| 2004 | 2.89265 |
| 2003 | 2.85169 |
| 2002 | 2.8502 |
| 2001 | 2.87371 |
| 2000 | 2.89642 |
| 1999 | 2.92898 |
| 1998 | 2.93206 |
| 1997 | 2.92247 |
| 1996 | 2.92855 |
| 1995 | 2.96365 |
| 1994 | 3.16538 |
| 1993 | 3.58633 |
| 1992 | 3.94643 |
| 1991 | 4.04169 |
| 1990 | 4.00809 |
| 1989 | 3.96825 |
| 1988 | 3.91858 |
| 1987 | 3.85443 |
| 1986 | 3.78534 |
| 1985 | 3.70828 |
| 1984 | 3.60885 |
| 1983 | 3.49062 |
| 1982 | 3.36551 |
| 1981 | 3.32034 |
| 1980 | 3.31505 |
| 1979 | 3.24281 |
| 1978 | 3.17634 |
| 1977 | 3.12217 |
| 1976 | 3.05052 |
| 1975 | 2.98164 |
| 1974 | 2.97124 |
| 1973 | 2.97639 |
| 1972 | 2.9392 |
| 1971 | 2.9052 |
| 1970 | 2.88676 |
| 1969 | 2.87035 |
| 1968 | 2.84876 |
| 1967 | 2.79655 |
| 1966 | 2.76058 |
| 1965 | 2.76903 |
| 1964 | 2.77163 |
| 1963 | 2.77034 |
| 1962 | 2.76307 |
| 1961 | 2.75223 |
| 1960 | - |