| 年份 | 美属萨摩亚 |
|---|---|
| 2023 | - |
| 2022 | 5.69209 |
| 2021 | 5.89994 |
| 2020 | 6.02102 |
| 2019 | 6.08761 |
| 2018 | 6.12392 |
| 2017 | 6.11206 |
| 2016 | 6.06752 |
| 2015 | 6.0693 |
| 2014 | 6.13433 |
| 2013 | 6.20817 |
| 2012 | 6.30857 |
| 2011 | 6.42079 |
| 2010 | 6.5155 |
| 2009 | 6.59892 |
| 2008 | 6.65315 |
| 2007 | 6.67517 |
| 2006 | 6.68402 |
| 2005 | 6.6401 |
| 2004 | 6.53705 |
| 2003 | 6.38126 |
| 2002 | 6.1767 |
| 2001 | 5.96345 |
| 2000 | 5.75388 |
| 1999 | 5.56067 |
| 1998 | 5.41842 |
| 1997 | 5.31616 |
| 1996 | 5.24144 |
| 1995 | 5.17373 |
| 1994 | 5.09417 |
| 1993 | 4.99479 |
| 1992 | 4.87685 |
| 1991 | 4.74365 |
| 1990 | 4.6176 |
| 1989 | 4.50822 |
| 1988 | 4.37751 |
| 1987 | 4.26011 |
| 1986 | 4.14624 |
| 1985 | 4.02813 |
| 1984 | 3.96391 |
| 1983 | 3.9961 |
| 1982 | 4.05499 |
| 1981 | 4.09211 |
| 1980 | 4.11993 |
| 1979 | 4.09692 |
| 1978 | 4.03472 |
| 1977 | 4.00889 |
| 1976 | 4.04765 |
| 1975 | 4.10618 |
| 1974 | 4.16417 |
| 1973 | 4.22873 |
| 1972 | 4.31699 |
| 1971 | 4.39747 |
| 1970 | 4.43374 |
| 1969 | 4.42273 |
| 1968 | 4.38145 |
| 1967 | 4.31726 |
| 1966 | 4.23233 |
| 1965 | 4.15009 |
| 1964 | 4.10959 |
| 1963 | 4.08764 |
| 1962 | 4.00483 |
| 1961 | 3.90975 |
| 1960 | 3.87863 |