| 年份 | 美属萨摩亚 |
|---|---|
| 2023 | - |
| 2022 | 6.04924 |
| 2021 | 5.97248 |
| 2020 | 5.82762 |
| 2019 | 5.64197 |
| 2018 | 5.43022 |
| 2017 | 5.17314 |
| 2016 | 4.90122 |
| 2015 | 4.65098 |
| 2014 | 4.42395 |
| 2013 | 4.23991 |
| 2012 | 4.10076 |
| 2011 | 3.98679 |
| 2010 | 3.87289 |
| 2009 | 3.74553 |
| 2008 | 3.61073 |
| 2007 | 3.46778 |
| 2006 | 3.3019 |
| 2005 | 3.13673 |
| 2004 | 2.96562 |
| 2003 | 2.76814 |
| 2002 | 2.59373 |
| 2001 | 2.44507 |
| 2000 | 2.3257 |
| 1999 | 2.27208 |
| 1998 | 2.31342 |
| 1997 | 2.3705 |
| 1996 | 2.40038 |
| 1995 | 2.41926 |
| 1994 | 2.39242 |
| 1993 | 2.31422 |
| 1992 | 2.21526 |
| 1991 | 2.13831 |
| 1990 | 2.08329 |
| 1989 | 2.0954 |
| 1988 | 2.18875 |
| 1987 | 2.31455 |
| 1986 | 2.45141 |
| 1985 | 2.56477 |
| 1984 | 2.62918 |
| 1983 | 2.63804 |
| 1982 | 2.60781 |
| 1981 | 2.52492 |
| 1980 | 2.40485 |
| 1979 | 2.31468 |
| 1978 | 2.27908 |
| 1977 | 2.27137 |
| 1976 | 2.2878 |
| 1975 | 2.31232 |
| 1974 | 2.32517 |
| 1973 | 2.32383 |
| 1972 | 2.28397 |
| 1971 | 2.20982 |
| 1970 | 2.12277 |
| 1969 | 2.03175 |
| 1968 | 1.93358 |
| 1967 | 1.85848 |
| 1966 | 1.80902 |
| 1965 | 1.76236 |
| 1964 | 1.75415 |
| 1963 | 1.79389 |
| 1962 | 1.85283 |
| 1961 | 1.93246 |
| 1960 | 2.01095 |