| 年份 | 美属萨摩亚 |
|---|---|
| 2023 | - |
| 2022 | 4.86216 |
| 2021 | 5.06752 |
| 2020 | 5.26603 |
| 2019 | 5.44307 |
| 2018 | 5.57927 |
| 2017 | 5.69219 |
| 2016 | 5.80428 |
| 2015 | 5.91903 |
| 2014 | 6.04031 |
| 2013 | 6.1912 |
| 2012 | 6.35978 |
| 2011 | 6.5062 |
| 2010 | 6.62678 |
| 2009 | 6.71137 |
| 2008 | 6.74521 |
| 2007 | 6.75706 |
| 2006 | 6.76901 |
| 2005 | 6.78232 |
| 2004 | 6.80384 |
| 2003 | 6.81181 |
| 2002 | 6.79416 |
| 2001 | 6.73305 |
| 2000 | 6.66105 |
| 1999 | 6.5889 |
| 1998 | 6.5025 |
| 1997 | 6.42449 |
| 1996 | 6.3709 |
| 1995 | 6.32098 |
| 1994 | 6.23376 |
| 1993 | 6.11497 |
| 1992 | 5.95962 |
| 1991 | 5.79676 |
| 1990 | 5.63831 |
| 1989 | 5.53183 |
| 1988 | 5.50912 |
| 1987 | 5.50878 |
| 1986 | 5.50166 |
| 1985 | 5.51305 |
| 1984 | 5.51918 |
| 1983 | 5.5012 |
| 1982 | 5.49153 |
| 1981 | 5.48964 |
| 1980 | 5.49634 |
| 1979 | 5.53383 |
| 1978 | 5.57979 |
| 1977 | 5.58256 |
| 1976 | 5.54349 |
| 1975 | 5.48108 |
| 1974 | 5.3713 |
| 1973 | 5.19396 |
| 1972 | 5.01572 |
| 1971 | 4.83894 |
| 1970 | 4.65175 |
| 1969 | 4.53092 |
| 1968 | 4.49989 |
| 1967 | 4.51626 |
| 1966 | 4.5414 |
| 1965 | 4.57453 |
| 1964 | 4.61777 |
| 1963 | 4.695 |
| 1962 | 4.81232 |
| 1961 | 4.97308 |
| 1960 | 5.11926 |