| 年份 | 美属萨摩亚  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | 4.61299 | 
| 2021 | 4.37884 | 
| 2020 | 4.15131 | 
| 2019 | 3.91765 | 
| 2018 | 3.69396 | 
| 2017 | 3.48374 | 
| 2016 | 3.30626 | 
| 2015 | 3.14892 | 
| 2014 | 3.02302 | 
| 2013 | 2.93505 | 
| 2012 | 2.85228 | 
| 2011 | 2.74321 | 
| 2010 | 2.64095 | 
| 2009 | 2.55186 | 
| 2008 | 2.45361 | 
| 2007 | 2.36156 | 
| 2006 | 2.28354 | 
| 2005 | 2.20852 | 
| 2004 | 2.15677 | 
| 2003 | 2.13464 | 
| 2002 | 2.12043 | 
| 2001 | 2.10282 | 
| 2000 | 2.08042 | 
| 1999 | 2.06063 | 
| 1998 | 2.01396 | 
| 1997 | 1.94233 | 
| 1996 | 1.87696 | 
| 1995 | 1.82797 | 
| 1994 | 1.7963 | 
| 1993 | 1.80166 | 
| 1992 | 1.85142 | 
| 1991 | 1.90306 | 
| 1990 | 1.91747 | 
| 1989 | 1.89795 | 
| 1988 | 1.86846 | 
| 1987 | 1.82488 | 
| 1986 | 1.79129 | 
| 1985 | 1.77618 | 
| 1984 | 1.76982 | 
| 1983 | 1.78676 | 
| 1982 | 1.82682 | 
| 1981 | 1.8701 | 
| 1980 | 1.88769 | 
| 1979 | 1.89757 | 
| 1978 | 1.90355 | 
| 1977 | 1.89051 | 
| 1976 | 1.85107 | 
| 1975 | 1.77407 | 
| 1974 | 1.69709 | 
| 1973 | 1.63405 | 
| 1972 | 1.55082 | 
| 1971 | 1.45417 | 
| 1970 | 1.37413 | 
| 1969 | 1.35296 | 
| 1968 | 1.41961 | 
| 1967 | 1.533 | 
| 1966 | 1.63961 | 
| 1965 | 1.70186 | 
| 1964 | 1.69448 | 
| 1963 | 1.60057 | 
| 1962 | 1.46203 | 
| 1961 | 1.31293 | 
| 1960 | 1.19255 |