| 年份 | 加纳 |
|---|---|
| 2023 | - |
| 2022 | 1.09832 |
| 2021 | 2.98784 |
| 2020 | -1.54164 |
| 2019 | 4.30598 |
| 2018 | 3.96955 |
| 2017 | 5.73908 |
| 2016 | 0.983232 |
| 2015 | -0.265333 |
| 2014 | 0.409401 |
| 2013 | 4.71277 |
| 2012 | 6.63635 |
| 2011 | 11.3001 |
| 2010 | 5.26724 |
| 2009 | 2.21957 |
| 2008 | 6.37791 |
| 2007 | 1.66321 |
| 2006 | 3.62858 |
| 2005 | 3.12031 |
| 2004 | 2.81891 |
| 2003 | 2.38282 |
| 2002 | 1.66705 |
| 2001 | 1.2703 |
| 2000 | 1.12293 |
| 1999 | 1.88438 |
| 1998 | 2.20148 |
| 1997 | 1.7778 |
| 1996 | 2.22753 |
| 1995 | 1.73619 |
| 1994 | 0.892085 |
| 1993 | 2.31698 |
| 1992 | 1.33336 |
| 1991 | 2.64711 |
| 1990 | 0.689672 |
| 1989 | 2.4276 |
| 1988 | 3.02998 |
| 1987 | 2.31168 |
| 1986 | 2.78794 |
| 1985 | 2.71321 |
| 1984 | 5.72948 |
| 1983 | -7.49762 |
| 1982 | -9.67502 |
| 1981 | -6.25042 |
| 1980 | -2.48838 |
| 1979 | -5.49854 |
| 1978 | 5.19409 |
| 1977 | -0.715939 |
| 1976 | -6.27637 |
| 1975 | -14.9264 |
| 1974 | 3.81701 |
| 1973 | -0.0111674 |
| 1972 | -5.16415 |
| 1971 | 2.36324 |
| 1970 | 6.85047 |
| 1969 | 3.40569 |
| 1968 | -2.04035 |
| 1967 | 0.611066 |
| 1966 | -6.54965 |
| 1965 | -1.05951 |
| 1964 | -0.224811 |
| 1963 | 1.92748 |
| 1962 | 1.64751 |
| 1961 | 0.555959 |
| 1960 | - |