| 年份 | 美属萨摩亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 29 |
| 2020 | 28.7 |
| 2019 | 28.4 |
| 2018 | 28.1 |
| 2017 | 27.8 |
| 2016 | 27.5 |
| 2015 | 27.2 |
| 2014 | 26.9 |
| 2013 | 26.6 |
| 2012 | 26.3 |
| 2011 | 26 |
| 2010 | 25.7 |
| 2009 | 25.4 |
| 2008 | 25.1 |
| 2007 | 24.8 |
| 2006 | 24.5 |
| 2005 | 24.2 |
| 2004 | 23.9 |
| 2003 | 23.6 |
| 2002 | 23.3 |
| 2001 | 23 |
| 2000 | 22.7 |
| 1999 | 22.36 |
| 1998 | 22.02 |
| 1997 | 21.68 |
| 1996 | 21.34 |
| 1995 | 21 |
| 1994 | 20.66 |
| 1993 | 20.32 |
| 1992 | 19.98 |
| 1991 | 19.64 |
| 1990 | 19.3 |
| 1989 | 19.3 |
| 1988 | 19.3 |
| 1987 | 19.3 |
| 1986 | 19.3 |
| 1985 | 19.3 |
| 1984 | 19.3 |
| 1983 | 19.3 |
| 1982 | 19.3 |
| 1981 | 19.3 |
| 1980 | 19.3 |
| 1979 | 19.3 |
| 1978 | 19.3 |
| 1977 | 19.3 |
| 1976 | 19.3 |
| 1975 | 19.3 |
| 1974 | 19.3 |
| 1973 | 19.3 |
| 1972 | 19.3 |
| 1971 | 19.3 |
| 1970 | 19.3 |
| 1969 | 19.3 |
| 1968 | 19.3 |
| 1967 | 19.3 |
| 1966 | 19.3 |
| 1965 | 19.3 |
| 1964 | 19.3 |
| 1963 | 19.3 |
| 1962 | 19.3 |
| 1961 | 19.3 |
| 1960 | - |