| 年份 | 美属维京群岛 |
|---|---|
| 2023 | - |
| 2022 | 7.32349 |
| 2021 | 7.31942 |
| 2020 | 7.28216 |
| 2019 | 7.15761 |
| 2018 | 6.96014 |
| 2017 | 6.76703 |
| 2016 | 6.6111 |
| 2015 | 6.50857 |
| 2014 | 6.49053 |
| 2013 | 6.55974 |
| 2012 | 6.67027 |
| 2011 | 6.78102 |
| 2010 | 6.86376 |
| 2009 | 6.91074 |
| 2008 | 6.88992 |
| 2007 | 6.77341 |
| 2006 | 6.56802 |
| 2005 | 6.29097 |
| 2004 | 5.95207 |
| 2003 | 5.57327 |
| 2002 | 5.19502 |
| 2001 | 4.83743 |
| 2000 | 4.52588 |
| 1999 | 4.30511 |
| 1998 | 4.15919 |
| 1997 | 4.02978 |
| 1996 | 3.90147 |
| 1995 | 3.79579 |
| 1994 | 3.70389 |
| 1993 | 3.59165 |
| 1992 | 3.46127 |
| 1991 | 3.35012 |
| 1990 | 3.22168 |
| 1989 | 3.06943 |
| 1988 | 2.95469 |
| 1987 | 2.848 |
| 1986 | 2.74848 |
| 1985 | 2.68882 |
| 1984 | 2.63506 |
| 1983 | 2.5881 |
| 1982 | 2.62038 |
| 1981 | 2.65126 |
| 1980 | 2.61791 |
| 1979 | 2.58893 |
| 1978 | 2.54286 |
| 1977 | 2.46818 |
| 1976 | 2.40469 |
| 1975 | 2.344 |
| 1974 | 2.27136 |
| 1973 | 2.18084 |
| 1972 | 2.08185 |
| 1971 | 1.98776 |
| 1970 | 1.9385 |
| 1969 | 1.93734 |
| 1968 | 1.94817 |
| 1967 | 1.99045 |
| 1966 | 2.07876 |
| 1965 | 2.21039 |
| 1964 | 2.34847 |
| 1963 | 2.48215 |
| 1962 | 2.61547 |
| 1961 | 2.75656 |
| 1960 | 2.64581 |