| 年份 | 美属维京群岛 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 2.01 |
| 2020 | 2.03 |
| 2019 | 2.05 |
| 2018 | 2.06 |
| 2017 | 2.08 |
| 2016 | 2.09 |
| 2015 | 2.11 |
| 2014 | 2.09 |
| 2013 | 2.08 |
| 2012 | 2.06 |
| 2011 | 2.16 |
| 2010 | 2.3 |
| 2009 | 2.37 |
| 2008 | 2.44 |
| 2007 | 2.51 |
| 2006 | 2.03 |
| 2005 | 2.24 |
| 2004 | 2.17 |
| 2003 | 2.07 |
| 2002 | 2.21 |
| 2001 | 1.9 |
| 2000 | 2.06 |
| 1999 | 2.377 |
| 1998 | 2.501 |
| 1997 | 2.727 |
| 1996 | 2.559 |
| 1995 | 2.717 |
| 1994 | 3.044 |
| 1993 | 3.096 |
| 1992 | 3.204 |
| 1991 | 3.102 |
| 1990 | 2.99 |
| 1989 | 2.95 |
| 1988 | 2.804 |
| 1987 | 2.845 |
| 1986 | 2.74 |
| 1985 | 2.821 |
| 1984 | 2.847 |
| 1983 | 2.996 |
| 1982 | 2.952 |
| 1981 | 2.89 |
| 1980 | 3.094 |
| 1979 | 3.025 |
| 1978 | 3.304 |
| 1977 | 3.268 |
| 1976 | 3.424 |
| 1975 | 3.627 |
| 1974 | 3.863 |
| 1973 | 4.142 |
| 1972 | 4.639 |
| 1971 | 4.898 |
| 1970 | 5.127 |
| 1969 | 4.667 |
| 1968 | 4.744 |
| 1967 | 4.866 |
| 1966 | 4.568 |
| 1965 | 5.113 |
| 1964 | 5.016 |
| 1963 | 4.648 |
| 1962 | 4.929 |
| 1961 | 4.893 |
| 1960 | 5.445 |