| 年份 | 美属萨摩亚 |
|---|---|
| 2023 | - |
| 2022 | 8.38412 |
| 2021 | 8.56854 |
| 2020 | 8.8059 |
| 2019 | 9.07256 |
| 2018 | 9.35364 |
| 2017 | 9.62948 |
| 2016 | 9.89368 |
| 2015 | 10.1545 |
| 2014 | 10.4949 |
| 2013 | 10.8804 |
| 2012 | 11.1927 |
| 2011 | 11.4409 |
| 2010 | 11.6536 |
| 2009 | 11.6854 |
| 2008 | 11.605 |
| 2007 | 11.6407 |
| 2006 | 11.7902 |
| 2005 | 12.0492 |
| 2004 | 12.3891 |
| 2003 | 12.7608 |
| 2002 | 13.1766 |
| 2001 | 13.6669 |
| 2000 | 14.208 |
| 1999 | 14.7234 |
| 1998 | 15.1986 |
| 1997 | 15.6067 |
| 1996 | 15.8987 |
| 1995 | 16.0863 |
| 1994 | 16.1851 |
| 1993 | 16.2176 |
| 1992 | 16.2193 |
| 1991 | 16.2059 |
| 1990 | 16.1723 |
| 1989 | 16.104 |
| 1988 | 16.004 |
| 1987 | 15.876 |
| 1986 | 15.7189 |
| 1985 | 15.5256 |
| 1984 | 15.3158 |
| 1983 | 15.1534 |
| 1982 | 15.0651 |
| 1981 | 15.0775 |
| 1980 | 15.2152 |
| 1979 | 15.393 |
| 1978 | 15.5472 |
| 1977 | 15.7106 |
| 1976 | 15.8691 |
| 1975 | 16.0272 |
| 1974 | 16.2022 |
| 1973 | 16.4065 |
| 1972 | 16.6642 |
| 1971 | 16.9765 |
| 1970 | 17.3473 |
| 1969 | 17.7102 |
| 1968 | 17.9963 |
| 1967 | 18.2188 |
| 1966 | 18.3698 |
| 1965 | 18.4633 |
| 1964 | 18.509 |
| 1963 | 18.4995 |
| 1962 | 18.456 |
| 1961 | 18.3833 |
| 1960 | 18.2828 |