| 年份 | 圭亚那 |
|---|---|
| 2023 | - |
| 2022 | 8.98064 |
| 2021 | 8.97291 |
| 2020 | 8.99688 |
| 2019 | 9.00964 |
| 2018 | 9.11937 |
| 2017 | 9.292 |
| 2016 | 9.40188 |
| 2015 | 9.56756 |
| 2014 | 9.78119 |
| 2013 | 10.0333 |
| 2012 | 10.3422 |
| 2011 | 10.6816 |
| 2010 | 10.9868 |
| 2009 | 11.2401 |
| 2008 | 11.4374 |
| 2007 | 11.5825 |
| 2006 | 11.6773 |
| 2005 | 11.6692 |
| 2004 | 11.5464 |
| 2003 | 11.3529 |
| 2002 | 11.1039 |
| 2001 | 10.8256 |
| 2000 | 10.595 |
| 1999 | 10.4518 |
| 1998 | 10.3802 |
| 1997 | 10.386 |
| 1996 | 10.4696 |
| 1995 | 10.6264 |
| 1994 | 10.8427 |
| 1993 | 11.0969 |
| 1992 | 11.3643 |
| 1991 | 11.6143 |
| 1990 | 11.8192 |
| 1989 | 11.9787 |
| 1988 | 12.1156 |
| 1987 | 12.2475 |
| 1986 | 12.38 |
| 1985 | 12.5188 |
| 1984 | 12.6774 |
| 1983 | 12.8625 |
| 1982 | 13.0866 |
| 1981 | 13.363 |
| 1980 | 13.6564 |
| 1979 | 13.9232 |
| 1978 | 14.1469 |
| 1977 | 14.3132 |
| 1976 | 14.4168 |
| 1975 | 14.4638 |
| 1974 | 14.4597 |
| 1973 | 14.4152 |
| 1972 | 14.3258 |
| 1971 | 14.1932 |
| 1970 | 14.0611 |
| 1969 | 13.9472 |
| 1968 | 13.8318 |
| 1967 | 13.7194 |
| 1966 | 13.6069 |
| 1965 | 13.4629 |
| 1964 | 13.2784 |
| 1963 | 13.0572 |
| 1962 | 12.8048 |
| 1961 | 12.5345 |
| 1960 | 12.2679 |