| 年份 | 美属维京群岛 |
|---|---|
| 2023 | - |
| 2022 | 6.22311 |
| 2021 | 6.18948 |
| 2020 | 6.17211 |
| 2019 | 6.1811 |
| 2018 | 6.21276 |
| 2017 | 6.28383 |
| 2016 | 6.38393 |
| 2015 | 6.50201 |
| 2014 | 6.62609 |
| 2013 | 6.75645 |
| 2012 | 6.88188 |
| 2011 | 6.99509 |
| 2010 | 7.09329 |
| 2009 | 7.17604 |
| 2008 | 7.27179 |
| 2007 | 7.39737 |
| 2006 | 7.53715 |
| 2005 | 7.65393 |
| 2004 | 7.67325 |
| 2003 | 7.59419 |
| 2002 | 7.49174 |
| 2001 | 7.40524 |
| 2000 | 7.32542 |
| 1999 | 7.27161 |
| 1998 | 7.28688 |
| 1997 | 7.34564 |
| 1996 | 7.40427 |
| 1995 | 7.46409 |
| 1994 | 7.57859 |
| 1993 | 7.67895 |
| 1992 | 7.77562 |
| 1991 | 7.92401 |
| 1990 | 8.07569 |
| 1989 | 8.11936 |
| 1988 | 8.0546 |
| 1987 | 7.8787 |
| 1986 | 7.49694 |
| 1985 | 7.07716 |
| 1984 | 6.74896 |
| 1983 | 6.40342 |
| 1982 | 6.07693 |
| 1981 | 5.87913 |
| 1980 | 5.67616 |
| 1979 | 5.47898 |
| 1978 | 5.37278 |
| 1977 | 5.28918 |
| 1976 | 5.2133 |
| 1975 | 5.16927 |
| 1974 | 5.12169 |
| 1973 | 5.04673 |
| 1972 | 4.98387 |
| 1971 | 4.94979 |
| 1970 | 4.93681 |
| 1969 | 4.99967 |
| 1968 | 5.15884 |
| 1967 | 5.36015 |
| 1966 | 5.59385 |
| 1965 | 5.85101 |
| 1964 | 6.00061 |
| 1963 | 5.99798 |
| 1962 | 5.9725 |
| 1961 | 5.94811 |
| 1960 | 5.43018 |