| 年份 | 加纳 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 22.8 |
| 2020 | 23.4 |
| 2019 | 24 |
| 2018 | 24.6 |
| 2017 | 25.2 |
| 2016 | 25.8 |
| 2015 | 26.5 |
| 2014 | 27.2 |
| 2013 | 27.9 |
| 2012 | 28.6 |
| 2011 | 29.4 |
| 2010 | 30.1 |
| 2009 | 30.8 |
| 2008 | 31.5 |
| 2007 | 32 |
| 2006 | 32.4 |
| 2005 | 32.8 |
| 2004 | 33.2 |
| 2003 | 33.7 |
| 2002 | 34.3 |
| 2001 | 35 |
| 2000 | 35.9 |
| 1999 | 36.7 |
| 1998 | 37.4 |
| 1997 | 38.1 |
| 1996 | 38.6 |
| 1995 | 39 |
| 1994 | 39.4 |
| 1993 | 39.9 |
| 1992 | 40.5 |
| 1991 | 41.2 |
| 1990 | 42.1 |
| 1989 | 43.1 |
| 1988 | 44.2 |
| 1987 | 45.2 |
| 1986 | 46.2 |
| 1985 | 47.2 |
| 1984 | 48.2 |
| 1983 | 49.2 |
| 1982 | 50 |
| 1981 | 50.8 |
| 1980 | 51.4 |
| 1979 | 52 |
| 1978 | 52.7 |
| 1977 | 53.6 |
| 1976 | 54.6 |
| 1975 | 55.6 |
| 1974 | 56.6 |
| 1973 | 57.6 |
| 1972 | 58.4 |
| 1971 | 59.1 |
| 1970 | 59.5 |
| 1969 | 59.8 |
| 1968 | 60 |
| 1967 | 60.1 |
| 1966 | 60.2 |
| 1965 | 60.3 |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |