| 年份 | 加纳 |
|---|---|
| 2023 | - |
| 2022 | 10.0811 |
| 2021 | 10.0668 |
| 2020 | 10.0292 |
| 2019 | 9.98118 |
| 2018 | 9.92481 |
| 2017 | 9.84324 |
| 2016 | 9.75481 |
| 2015 | 9.69279 |
| 2014 | 9.68557 |
| 2013 | 9.75162 |
| 2012 | 9.88447 |
| 2011 | 10.0628 |
| 2010 | 10.2574 |
| 2009 | 10.4459 |
| 2008 | 10.6203 |
| 2007 | 10.7836 |
| 2006 | 10.9426 |
| 2005 | 11.0951 |
| 2004 | 11.2399 |
| 2003 | 11.4063 |
| 2002 | 11.5595 |
| 2001 | 11.639 |
| 2000 | 11.6805 |
| 1999 | 11.6943 |
| 1998 | 11.6172 |
| 1997 | 11.4787 |
| 1996 | 11.3054 |
| 1995 | 11.0817 |
| 1994 | 10.8493 |
| 1993 | 10.6168 |
| 1992 | 10.3835 |
| 1991 | 10.1929 |
| 1990 | 10.0679 |
| 1989 | 9.97851 |
| 1988 | 9.93454 |
| 1987 | 9.96203 |
| 1986 | 10.0911 |
| 1985 | 10.3011 |
| 1984 | 10.5689 |
| 1983 | 10.8157 |
| 1982 | 10.9976 |
| 1981 | 11.1575 |
| 1980 | 11.248 |
| 1979 | 11.2419 |
| 1978 | 11.1416 |
| 1977 | 10.9391 |
| 1976 | 10.7159 |
| 1975 | 10.5031 |
| 1974 | 10.268 |
| 1973 | 10.0443 |
| 1972 | 9.86484 |
| 1971 | 9.76551 |
| 1970 | 9.71205 |
| 1969 | 9.62202 |
| 1968 | 9.46601 |
| 1967 | 9.24563 |
| 1966 | 8.98645 |
| 1965 | 8.72643 |
| 1964 | 8.48092 |
| 1963 | 8.29367 |
| 1962 | 8.24345 |
| 1961 | 8.31183 |
| 1960 | 8.52114 |