| 年份 | 加纳 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 28.8 |
| 2020 | 29.6 |
| 2019 | 30.5 |
| 2018 | 31.5 |
| 2017 | 32.5 |
| 2016 | 33.6 |
| 2015 | 34.8 |
| 2014 | 36 |
| 2013 | 37.4 |
| 2012 | 38.9 |
| 2011 | 40.4 |
| 2010 | 42 |
| 2009 | 43.6 |
| 2008 | 45.2 |
| 2007 | 46.5 |
| 2006 | 47.8 |
| 2005 | 49 |
| 2004 | 50.4 |
| 2003 | 52 |
| 2002 | 53.8 |
| 2001 | 55.8 |
| 2000 | 58 |
| 1999 | 60 |
| 1998 | 62 |
| 1997 | 63.5 |
| 1996 | 64.7 |
| 1995 | 65.6 |
| 1994 | 66.5 |
| 1993 | 67.4 |
| 1992 | 68.7 |
| 1991 | 70.5 |
| 1990 | 72.9 |
| 1989 | 75.6 |
| 1988 | 78.6 |
| 1987 | 81.6 |
| 1986 | 84.6 |
| 1985 | 87.2 |
| 1984 | 89.3 |
| 1983 | 90.9 |
| 1982 | 91.9 |
| 1981 | 92.6 |
| 1980 | 93.4 |
| 1979 | 94.5 |
| 1978 | 96.1 |
| 1977 | 98.3 |
| 1976 | 100.9 |
| 1975 | 103.7 |
| 1974 | 106.2 |
| 1973 | 108.3 |
| 1972 | 110 |
| 1971 | 111.1 |
| 1970 | 111.6 |
| 1969 | 111.9 |
| 1968 | 111.8 |
| 1967 | 111.7 |
| 1966 | 111.5 |
| 1965 | 111.4 |
| 1964 | 111.5 |
| 1963 | 112 |
| 1962 | 112.6 |
| 1961 | 113.5 |
| 1960 | 114.6 |