| 年份 | 海峡群岛 |
|---|---|
| 2023 | - |
| 2022 | 31.077 |
| 2021 | 31.012 |
| 2020 | 30.963 |
| 2019 | 30.931 |
| 2018 | 30.914 |
| 2017 | 30.914 |
| 2016 | 30.93 |
| 2015 | 30.962 |
| 2014 | 30.995 |
| 2013 | 31.027 |
| 2012 | 31.059 |
| 2011 | 31.091 |
| 2010 | 31.054 |
| 2009 | 30.992 |
| 2008 | 30.929 |
| 2007 | 30.867 |
| 2006 | 30.805 |
| 2005 | 30.743 |
| 2004 | 30.681 |
| 2003 | 30.619 |
| 2002 | 30.557 |
| 2001 | 30.495 |
| 2000 | 30.465 |
| 1999 | 30.449 |
| 1998 | 30.432 |
| 1997 | 30.416 |
| 1996 | 30.4 |
| 1995 | 30.522 |
| 1994 | 30.706 |
| 1993 | 30.891 |
| 1992 | 31.076 |
| 1991 | 31.262 |
| 1990 | 31.392 |
| 1989 | 31.497 |
| 1988 | 31.602 |
| 1987 | 31.707 |
| 1986 | 31.813 |
| 1985 | 31.832 |
| 1984 | 31.851 |
| 1983 | 31.871 |
| 1982 | 31.89 |
| 1981 | 31.909 |
| 1980 | 32.209 |
| 1979 | 32.599 |
| 1978 | 32.992 |
| 1977 | 33.387 |
| 1976 | 33.783 |
| 1975 | 34.183 |
| 1974 | 34.585 |
| 1973 | 34.989 |
| 1972 | 35.394 |
| 1971 | 35.803 |
| 1970 | 36.088 |
| 1969 | 36.346 |
| 1968 | 36.604 |
| 1967 | 36.864 |
| 1966 | 37.124 |
| 1965 | 37.385 |
| 1964 | 37.646 |
| 1963 | 37.909 |
| 1962 | 38.172 |
| 1961 | 38.436 |
| 1960 | 38.7 |