| 年份 | 美属萨摩亚 |
|---|---|
| 2023 | - |
| 2022 | 0.54405 |
| 2021 | 0.536139 |
| 2020 | 0.527912 |
| 2019 | 0.518388 |
| 2018 | 0.495152 |
| 2017 | 0.467602 |
| 2016 | 0.451664 |
| 2015 | 0.433195 |
| 2014 | 0.414138 |
| 2013 | 0.405611 |
| 2012 | 0.401651 |
| 2011 | 0.398414 |
| 2010 | 0.395871 |
| 2009 | 0.395207 |
| 2008 | 0.382105 |
| 2007 | 0.355635 |
| 2006 | 0.338624 |
| 2005 | 0.330761 |
| 2004 | 0.316418 |
| 2003 | 0.300821 |
| 2002 | 0.29084 |
| 2001 | 0.284756 |
| 2000 | 0.279862 |
| 1999 | 0.28951 |
| 1998 | 0.3169 |
| 1997 | 0.341935 |
| 1996 | 0.364616 |
| 1995 | 0.375485 |
| 1994 | 0.3701 |
| 1993 | 0.364532 |
| 1992 | 0.362488 |
| 1991 | 0.360307 |
| 1990 | 0.372899 |
| 1989 | 0.382956 |
| 1988 | 0.378506 |
| 1987 | 0.377719 |
| 1986 | 0.373876 |
| 1985 | 0.366553 |
| 1984 | 0.358056 |
| 1983 | 0.337676 |
| 1982 | 0.315065 |
| 1981 | 0.301629 |
| 1980 | 0.282856 |
| 1979 | 0.265844 |
| 1978 | 0.255468 |
| 1977 | 0.254186 |
| 1976 | 0.262586 |
| 1975 | 0.271406 |
| 1974 | 0.28341 |
| 1973 | 0.291795 |
| 1972 | 0.28292 |
| 1971 | 0.270213 |
| 1970 | 0.268301 |
| 1969 | 0.275052 |
| 1968 | 0.290809 |
| 1967 | 0.299507 |
| 1966 | 0.308442 |
| 1965 | 0.330337 |
| 1964 | 0.34062 |
| 1963 | 0.329006 |
| 1962 | 0.320821 |
| 1961 | 0.330594 |
| 1960 | 0.329649 |