| 年份 | 加纳 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 5.16505 |
| 2020 | 2.23781 |
| 2019 | 2.05144 |
| 2018 | 1.72216 |
| 2017 | 1.78437 |
| 2016 | 1.22418 |
| 2015 | 2.35817 |
| 2014 | 3.16234 |
| 2013 | 2.95305 |
| 2012 | 4.81836 |
| 2011 | 5.48815 |
| 2010 | 3.94881 |
| 2009 | 2.93652 |
| 2008 | 2.07838 |
| 2007 | 2.15661 |
| 2006 | 2.12913 |
| 2005 | 1.66845 |
| 2004 | 0.945873 |
| 2003 | 1.21634 |
| 2002 | 2.9502 |
| 2001 | 2.67339 |
| 2000 | 3.03211 |
| 1999 | 1.31546 |
| 1998 | 1.72216 |
| 1997 | 1.80511 |
| 1996 | 2.63116 |
| 1995 | 1.2282 |
| 1994 | 3.99438 |
| 1993 | 2.53975 |
| 1992 | 1.56652 |
| 1991 | 1.73891 |
| 1990 | 0.768246 |
| 1989 | 0.800762 |
| 1988 | 1.03827 |
| 1987 | 1.101 |
| 1986 | 0.612221 |
| 1985 | 0.698463 |
| 1984 | 0.879635 |
| 1983 | 1.32526 |
| 1982 | 1.1482 |
| 1981 | 1.80635 |
| 1980 | 2.94746 |
| 1979 | 0.80937 |
| 1978 | 0.201366 |
| 1977 | 0.194838 |
| 1976 | 0.17182 |
| 1975 | 0.208677 |
| 1974 | 0.581659 |
| 1973 | 0.104916 |
| 1972 | 0.12865 |
| 1971 | 0.107244 |
| 1970 | 0.122948 |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |