| 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 |