| 年份 | 美属维京群岛 |
|---|---|
| 2023 | - |
| 2022 | 6.06175 |
| 2021 | 5.87626 |
| 2020 | 5.69055 |
| 2019 | 5.56738 |
| 2018 | 5.56769 |
| 2017 | 5.60184 |
| 2016 | 5.68903 |
| 2015 | 5.8569 |
| 2014 | 6.11279 |
| 2013 | 6.42877 |
| 2012 | 6.76023 |
| 2011 | 7.06179 |
| 2010 | 7.30328 |
| 2009 | 7.38494 |
| 2008 | 7.33526 |
| 2007 | 7.28818 |
| 2006 | 7.27209 |
| 2005 | 7.30757 |
| 2004 | 7.432 |
| 2003 | 7.61729 |
| 2002 | 7.79399 |
| 2001 | 7.92011 |
| 2000 | 8.01827 |
| 1999 | 7.96973 |
| 1998 | 7.71542 |
| 1997 | 7.4399 |
| 1996 | 7.22233 |
| 1995 | 6.90536 |
| 1994 | 6.61157 |
| 1993 | 6.60492 |
| 1992 | 6.75597 |
| 1991 | 7.05401 |
| 1990 | 7.53805 |
| 1989 | 8.15445 |
| 1988 | 8.86204 |
| 1987 | 9.64308 |
| 1986 | 10.4172 |
| 1985 | 11.0824 |
| 1984 | 11.6297 |
| 1983 | 12.0419 |
| 1982 | 12.1638 |
| 1981 | 11.8382 |
| 1980 | 11.0956 |
| 1979 | 10.1335 |
| 1978 | 9.28472 |
| 1977 | 8.78423 |
| 1976 | 8.59617 |
| 1975 | 8.51618 |
| 1974 | 8.34401 |
| 1973 | 8.13082 |
| 1972 | 8.05096 |
| 1971 | 8.13663 |
| 1970 | 8.29229 |
| 1969 | 8.42628 |
| 1968 | 8.54196 |
| 1967 | 8.5741 |
| 1966 | 8.42685 |
| 1965 | 8.04207 |
| 1964 | 7.7321 |
| 1963 | 7.64453 |
| 1962 | 7.5221 |
| 1961 | 7.33216 |
| 1960 | 8.39349 |