| 年份 | 美属维京群岛 |
|---|---|
| 2023 | - |
| 2022 | 7.16173 |
| 2021 | 7.29271 |
| 2020 | 7.41798 |
| 2019 | 7.50537 |
| 2018 | 7.54137 |
| 2017 | 7.56804 |
| 2016 | 7.58572 |
| 2015 | 7.60016 |
| 2014 | 7.62474 |
| 2013 | 7.64379 |
| 2012 | 7.63187 |
| 2011 | 7.58264 |
| 2010 | 7.47672 |
| 2009 | 7.31327 |
| 2008 | 7.1273 |
| 2007 | 6.96167 |
| 2006 | 6.85926 |
| 2005 | 6.85618 |
| 2004 | 6.92563 |
| 2003 | 7.0351 |
| 2002 | 7.18555 |
| 2001 | 7.34102 |
| 2000 | 7.42895 |
| 1999 | 7.48428 |
| 1998 | 7.55737 |
| 1997 | 7.56384 |
| 1996 | 7.42479 |
| 1995 | 7.19388 |
| 1994 | 6.87865 |
| 1993 | 6.44718 |
| 1992 | 6.05824 |
| 1991 | 5.75821 |
| 1990 | 5.45806 |
| 1989 | 5.1239 |
| 1988 | 4.81146 |
| 1987 | 4.52156 |
| 1986 | 4.23054 |
| 1985 | 4.01337 |
| 1984 | 3.8916 |
| 1983 | 3.79726 |
| 1982 | 3.68635 |
| 1981 | 3.62105 |
| 1980 | 3.57872 |
| 1979 | 3.53961 |
| 1978 | 3.55248 |
| 1977 | 3.5778 |
| 1976 | 3.59975 |
| 1975 | 3.62551 |
| 1974 | 3.6483 |
| 1973 | 3.66289 |
| 1972 | 3.68777 |
| 1971 | 3.71956 |
| 1970 | 3.75229 |
| 1969 | 3.84301 |
| 1968 | 3.99859 |
| 1967 | 4.18313 |
| 1966 | 4.37517 |
| 1965 | 4.5576 |
| 1964 | 4.59852 |
| 1963 | 4.46542 |
| 1962 | 4.28938 |
| 1961 | 4.10265 |
| 1960 | 3.863 |