| 年份 | 加纳 |
|---|---|
| 2023 | - |
| 2022 | 5.79115 |
| 2021 | 5.66819 |
| 2020 | 5.51909 |
| 2019 | 5.3637 |
| 2018 | 5.20471 |
| 2017 | 5.03881 |
| 2016 | 4.89093 |
| 2015 | 4.77636 |
| 2014 | 4.67818 |
| 2013 | 4.59834 |
| 2012 | 4.54796 |
| 2011 | 4.53935 |
| 2010 | 4.56299 |
| 2009 | 4.60797 |
| 2008 | 4.6814 |
| 2007 | 4.77477 |
| 2006 | 4.87269 |
| 2005 | 4.96041 |
| 2004 | 5.02095 |
| 2003 | 5.04244 |
| 2002 | 5.02222 |
| 2001 | 4.96166 |
| 2000 | 4.86228 |
| 1999 | 4.72883 |
| 1998 | 4.57128 |
| 1997 | 4.40225 |
| 1996 | 4.23222 |
| 1995 | 4.07144 |
| 1994 | 3.92008 |
| 1993 | 3.77251 |
| 1992 | 3.62481 |
| 1991 | 3.48601 |
| 1990 | 3.37258 |
| 1989 | 3.29021 |
| 1988 | 3.25868 |
| 1987 | 3.30713 |
| 1986 | 3.41988 |
| 1985 | 3.55305 |
| 1984 | 3.70073 |
| 1983 | 3.91927 |
| 1982 | 4.15367 |
| 1981 | 4.3072 |
| 1980 | 4.43624 |
| 1979 | 4.58428 |
| 1978 | 4.71748 |
| 1977 | 4.80971 |
| 1976 | 4.80679 |
| 1975 | 4.73267 |
| 1974 | 4.65246 |
| 1973 | 4.551 |
| 1972 | 4.43815 |
| 1971 | 4.29286 |
| 1970 | 4.16078 |
| 1969 | 4.08347 |
| 1968 | 4.02108 |
| 1967 | 3.96971 |
| 1966 | 3.94447 |
| 1965 | 3.95103 |
| 1964 | 3.98683 |
| 1963 | 4.04254 |
| 1962 | 4.09507 |
| 1961 | 4.13424 |
| 1960 | 4.10865 |