| 年份 | 美属萨摩亚 |
|---|---|
| 2023 | - |
| 2022 | 11.0748 |
| 2021 | 10.4252 |
| 2020 | 9.87609 |
| 2019 | 9.39207 |
| 2018 | 8.95294 |
| 2017 | 8.53916 |
| 2016 | 8.14927 |
| 2015 | 7.78656 |
| 2014 | 7.46902 |
| 2013 | 7.18619 |
| 2012 | 6.93297 |
| 2011 | 6.74057 |
| 2010 | 6.58172 |
| 2009 | 6.51509 |
| 2008 | 6.53515 |
| 2007 | 6.51806 |
| 2006 | 6.4695 |
| 2005 | 6.40945 |
| 2004 | 6.30266 |
| 2003 | 6.13495 |
| 2002 | 5.94923 |
| 2001 | 5.77683 |
| 2000 | 5.61263 |
| 1999 | 5.54805 |
| 1998 | 5.60207 |
| 1997 | 5.67636 |
| 1996 | 5.74164 |
| 1995 | 5.79437 |
| 1994 | 5.8083 |
| 1993 | 5.77724 |
| 1992 | 5.7181 |
| 1991 | 5.64138 |
| 1990 | 5.57103 |
| 1989 | 5.49803 |
| 1988 | 5.42523 |
| 1987 | 5.36552 |
| 1986 | 5.34623 |
| 1985 | 5.33227 |
| 1984 | 5.29349 |
| 1983 | 5.22593 |
| 1982 | 5.16401 |
| 1981 | 5.10333 |
| 1980 | 5.07492 |
| 1979 | 5.06939 |
| 1978 | 5 |
| 1977 | 4.91133 |
| 1976 | 4.8581 |
| 1975 | 4.84005 |
| 1974 | 4.84316 |
| 1973 | 4.83752 |
| 1972 | 4.83682 |
| 1971 | 4.86889 |
| 1970 | 4.90332 |
| 1969 | 4.92915 |
| 1968 | 4.91586 |
| 1967 | 4.83962 |
| 1966 | 4.76625 |
| 1965 | 4.75824 |
| 1964 | 4.78973 |
| 1963 | 4.85099 |
| 1962 | 5.01 |
| 1961 | 5.2475 |
| 1960 | 5.40874 |