| 年份 | 美属维京群岛 |
|---|---|
| 2023 | - |
| 2022 | 6.3135 |
| 2021 | 6.21575 |
| 2020 | 6.01082 |
| 2019 | 5.77458 |
| 2018 | 5.61595 |
| 2017 | 5.49556 |
| 2016 | 5.42917 |
| 2015 | 5.42004 |
| 2014 | 5.46803 |
| 2013 | 5.59256 |
| 2012 | 5.79882 |
| 2011 | 6.07373 |
| 2010 | 6.41645 |
| 2009 | 6.76192 |
| 2008 | 7.10155 |
| 2007 | 7.45951 |
| 2006 | 7.79199 |
| 2005 | 8.07805 |
| 2004 | 8.28822 |
| 2003 | 8.41448 |
| 2002 | 8.49739 |
| 2001 | 8.57244 |
| 2000 | 8.65249 |
| 1999 | 8.75137 |
| 1998 | 8.88342 |
| 1997 | 9.00348 |
| 1996 | 9.07792 |
| 1995 | 9.16646 |
| 1994 | 9.18614 |
| 1993 | 9.0263 |
| 1992 | 8.85679 |
| 1991 | 8.80702 |
| 1990 | 8.74214 |
| 1989 | 8.7314 |
| 1988 | 8.90493 |
| 1987 | 9.24547 |
| 1986 | 9.71542 |
| 1985 | 10.2718 |
| 1984 | 10.8213 |
| 1983 | 11.3187 |
| 1982 | 11.7167 |
| 1981 | 12.0098 |
| 1980 | 12.2942 |
| 1979 | 12.2894 |
| 1978 | 11.9665 |
| 1977 | 11.5673 |
| 1976 | 11.1328 |
| 1975 | 10.8295 |
| 1974 | 10.7276 |
| 1973 | 10.679 |
| 1972 | 10.6073 |
| 1971 | 10.527 |
| 1970 | 10.5063 |
| 1969 | 10.4707 |
| 1968 | 10.3495 |
| 1967 | 10.2459 |
| 1966 | 10.1294 |
| 1965 | 9.9264 |
| 1964 | 9.59345 |
| 1963 | 9.17487 |
| 1962 | 8.71464 |
| 1961 | 8.19835 |
| 1960 | 9.62163 |