| 年份 | 开曼群岛 |
|---|---|
| 2023 | - |
| 2022 | 8.16165 |
| 2021 | 7.82479 |
| 2020 | 7.5278 |
| 2019 | 7.2527 |
| 2018 | 6.98092 |
| 2017 | 6.7182 |
| 2016 | 6.46379 |
| 2015 | 6.20413 |
| 2014 | 5.95875 |
| 2013 | 5.77458 |
| 2012 | 5.62082 |
| 2011 | 5.48728 |
| 2010 | 5.39913 |
| 2009 | 5.33445 |
| 2008 | 5.31561 |
| 2007 | 5.33768 |
| 2006 | 5.35629 |
| 2005 | 5.37917 |
| 2004 | 5.40669 |
| 2003 | 5.42605 |
| 2002 | 5.46206 |
| 2001 | 5.50122 |
| 2000 | 5.52467 |
| 1999 | 5.52814 |
| 1998 | 5.5012 |
| 1997 | 5.47655 |
| 1996 | 5.49373 |
| 1995 | 5.55911 |
| 1994 | 5.64176 |
| 1993 | 5.74263 |
| 1992 | 5.87589 |
| 1991 | 6.03866 |
| 1990 | 6.20498 |
| 1989 | 6.31027 |
| 1988 | 6.31796 |
| 1987 | 6.28833 |
| 1986 | 6.28956 |
| 1985 | 6.33431 |
| 1984 | 6.39391 |
| 1983 | 6.46603 |
| 1982 | 6.55685 |
| 1981 | 6.65773 |
| 1980 | 6.78655 |
| 1979 | 6.77149 |
| 1978 | 6.60782 |
| 1977 | 6.46026 |
| 1976 | 6.35398 |
| 1975 | 6.33747 |
| 1974 | 6.38817 |
| 1973 | 6.47754 |
| 1972 | 6.60978 |
| 1971 | 6.7869 |
| 1970 | 6.99739 |
| 1969 | 7.04744 |
| 1968 | 6.91314 |
| 1967 | 6.81644 |
| 1966 | 6.76318 |
| 1965 | 6.70546 |
| 1964 | 6.66739 |
| 1963 | 6.67817 |
| 1962 | 6.76781 |
| 1961 | 6.94452 |
| 1960 | 7.18164 |