| 年份 | 美属维京群岛 |
|---|---|
| 2023 | - |
| 2022 | 5.07905 |
| 2021 | 4.90203 |
| 2020 | 4.74677 |
| 2019 | 4.65807 |
| 2018 | 4.68665 |
| 2017 | 4.77344 |
| 2016 | 4.91787 |
| 2015 | 5.13448 |
| 2014 | 5.43109 |
| 2013 | 5.77628 |
| 2012 | 6.12666 |
| 2011 | 6.45498 |
| 2010 | 6.74043 |
| 2009 | 6.92216 |
| 2008 | 7.00517 |
| 2007 | 7.05871 |
| 2006 | 7.10851 |
| 2005 | 7.17039 |
| 2004 | 7.2881 |
| 2003 | 7.45227 |
| 2002 | 7.59301 |
| 2001 | 7.66295 |
| 2000 | 7.69523 |
| 1999 | 7.61576 |
| 1998 | 7.38666 |
| 1997 | 7.15547 |
| 1996 | 6.96097 |
| 1995 | 6.67314 |
| 1994 | 6.44057 |
| 1993 | 6.417 |
| 1992 | 6.53481 |
| 1991 | 6.84648 |
| 1990 | 7.32327 |
| 1989 | 7.89382 |
| 1988 | 8.57036 |
| 1987 | 9.24832 |
| 1986 | 9.85188 |
| 1985 | 10.4147 |
| 1984 | 10.8906 |
| 1983 | 11.2479 |
| 1982 | 11.4004 |
| 1981 | 11.168 |
| 1980 | 10.5316 |
| 1979 | 9.7887 |
| 1978 | 9.19112 |
| 1977 | 8.86596 |
| 1976 | 8.83275 |
| 1975 | 8.87635 |
| 1974 | 8.77681 |
| 1973 | 8.5945 |
| 1972 | 8.47914 |
| 1971 | 8.47709 |
| 1970 | 8.54067 |
| 1969 | 8.60869 |
| 1968 | 8.64525 |
| 1967 | 8.54108 |
| 1966 | 8.18296 |
| 1965 | 7.51305 |
| 1964 | 6.9435 |
| 1963 | 6.66667 |
| 1962 | 6.42545 |
| 1961 | 6.24872 |
| 1960 | 7.52438 |