| 年份 | 开曼群岛 |
|---|---|
| 2023 | - |
| 2022 | 8.51337 |
| 2021 | 8.36822 |
| 2020 | 8.25268 |
| 2019 | 8.20189 |
| 2018 | 8.12683 |
| 2017 | 7.99274 |
| 2016 | 7.82687 |
| 2015 | 7.62626 |
| 2014 | 7.40629 |
| 2013 | 7.17573 |
| 2012 | 6.92465 |
| 2011 | 6.68698 |
| 2010 | 6.4654 |
| 2009 | 6.24976 |
| 2008 | 6.05761 |
| 2007 | 5.9127 |
| 2006 | 5.82075 |
| 2005 | 5.78204 |
| 2004 | 5.76324 |
| 2003 | 5.75112 |
| 2002 | 5.75395 |
| 2001 | 5.71471 |
| 2000 | 5.62219 |
| 1999 | 5.4454 |
| 1998 | 5.1746 |
| 1997 | 4.88888 |
| 1996 | 4.65747 |
| 1995 | 4.49689 |
| 1994 | 4.38011 |
| 1993 | 4.31996 |
| 1992 | 4.33732 |
| 1991 | 4.40711 |
| 1990 | 4.51451 |
| 1989 | 4.59657 |
| 1988 | 4.61708 |
| 1987 | 4.54766 |
| 1986 | 4.37615 |
| 1985 | 4.17882 |
| 1984 | 4.00299 |
| 1983 | 3.89008 |
| 1982 | 3.93023 |
| 1981 | 4.13482 |
| 1980 | 4.39278 |
| 1979 | 4.5125 |
| 1978 | 4.39911 |
| 1977 | 4.17829 |
| 1976 | 3.91332 |
| 1975 | 3.68874 |
| 1974 | 3.59338 |
| 1973 | 3.60533 |
| 1972 | 3.67595 |
| 1971 | 3.70127 |
| 1970 | 3.70334 |
| 1969 | 3.72888 |
| 1968 | 3.70604 |
| 1967 | 3.74919 |
| 1966 | 3.81393 |
| 1965 | 3.81017 |
| 1964 | 3.79207 |
| 1963 | 3.78448 |
| 1962 | 3.72558 |
| 1961 | 3.65944 |
| 1960 | 3.60598 |