| 年份 | 加纳 |
|---|---|
| 2023 | - |
| 2022 | 5.97382 |
| 2021 | 5.86614 |
| 2020 | 5.77079 |
| 2019 | 5.66858 |
| 2018 | 5.56823 |
| 2017 | 5.49299 |
| 2016 | 5.44135 |
| 2015 | 5.41044 |
| 2014 | 5.38602 |
| 2013 | 5.37468 |
| 2012 | 5.39599 |
| 2011 | 5.43955 |
| 2010 | 5.49152 |
| 2009 | 5.55135 |
| 2008 | 5.61704 |
| 2007 | 5.6746 |
| 2006 | 5.72079 |
| 2005 | 5.76391 |
| 2004 | 5.80496 |
| 2003 | 5.83388 |
| 2002 | 5.85139 |
| 2001 | 5.8634 |
| 2000 | 5.8569 |
| 1999 | 5.82149 |
| 1998 | 5.77138 |
| 1997 | 5.71933 |
| 1996 | 5.65684 |
| 1995 | 5.5866 |
| 1994 | 5.51966 |
| 1993 | 5.44683 |
| 1992 | 5.36062 |
| 1991 | 5.25905 |
| 1990 | 5.15058 |
| 1989 | 5.04592 |
| 1988 | 4.94687 |
| 1987 | 4.84639 |
| 1986 | 4.73253 |
| 1985 | 4.6205 |
| 1984 | 4.52761 |
| 1983 | 4.49813 |
| 1982 | 4.53557 |
| 1981 | 4.69722 |
| 1980 | 5.03649 |
| 1979 | 5.22119 |
| 1978 | 5.19113 |
| 1977 | 5.19923 |
| 1976 | 5.25699 |
| 1975 | 5.36136 |
| 1974 | 5.51298 |
| 1973 | 5.71956 |
| 1972 | 5.98289 |
| 1971 | 6.32584 |
| 1970 | 6.62627 |
| 1969 | 6.76741 |
| 1968 | 6.80958 |
| 1967 | 6.80224 |
| 1966 | 6.76614 |
| 1965 | 6.68433 |
| 1964 | 6.54455 |
| 1963 | 6.34504 |
| 1962 | 6.08804 |
| 1961 | 5.77901 |
| 1960 | 5.68239 |