| 年份 | 加纳 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 32.6 |
| 2020 | 33.5 |
| 2019 | 34.5 |
| 2018 | 35.6 |
| 2017 | 36.7 |
| 2016 | 37.9 |
| 2015 | 39.2 |
| 2014 | 40.6 |
| 2013 | 42.2 |
| 2012 | 43.8 |
| 2011 | 45.6 |
| 2010 | 47.4 |
| 2009 | 49.2 |
| 2008 | 51 |
| 2007 | 52.5 |
| 2006 | 53.8 |
| 2005 | 55.2 |
| 2004 | 56.6 |
| 2003 | 58.2 |
| 2002 | 60.1 |
| 2001 | 62.3 |
| 2000 | 64.6 |
| 1999 | 66.7 |
| 1998 | 68.7 |
| 1997 | 70.4 |
| 1996 | 71.7 |
| 1995 | 72.7 |
| 1994 | 73.6 |
| 1993 | 74.5 |
| 1992 | 75.8 |
| 1991 | 77.6 |
| 1990 | 80 |
| 1989 | 82.8 |
| 1988 | 85.9 |
| 1987 | 89.2 |
| 1986 | 92.2 |
| 1985 | 95 |
| 1984 | 97.2 |
| 1983 | 98.8 |
| 1982 | 99.9 |
| 1981 | 100.6 |
| 1980 | 101.4 |
| 1979 | 102.6 |
| 1978 | 104.2 |
| 1977 | 106.4 |
| 1976 | 109 |
| 1975 | 111.9 |
| 1974 | 114.5 |
| 1973 | 116.8 |
| 1972 | 118.6 |
| 1971 | 119.8 |
| 1970 | 120.5 |
| 1969 | 120.7 |
| 1968 | 120.7 |
| 1967 | 120.5 |
| 1966 | 120.3 |
| 1965 | 120.3 |
| 1964 | 120.5 |
| 1963 | 120.9 |
| 1962 | 121.5 |
| 1961 | 122.4 |
| 1960 | 123.6 |