| 年份 | 美属萨摩亚 |
|---|---|
| 2023 | - |
| 2022 | 6.22228 |
| 2021 | 6.35964 |
| 2020 | 6.42656 |
| 2019 | 6.45011 |
| 2018 | 6.41833 |
| 2017 | 6.35817 |
| 2016 | 6.2916 |
| 2015 | 6.23762 |
| 2014 | 6.20444 |
| 2013 | 6.17054 |
| 2012 | 6.12657 |
| 2011 | 6.05114 |
| 2010 | 5.95072 |
| 2009 | 5.82082 |
| 2008 | 5.6555 |
| 2007 | 5.47818 |
| 2006 | 5.31553 |
| 2005 | 5.16469 |
| 2004 | 5.00453 |
| 2003 | 4.85392 |
| 2002 | 4.70755 |
| 2001 | 4.56621 |
| 2000 | 4.43058 |
| 1999 | 4.3205 |
| 1998 | 4.2565 |
| 1997 | 4.20897 |
| 1996 | 4.14908 |
| 1995 | 4.10836 |
| 1994 | 4.07297 |
| 1993 | 4.01939 |
| 1992 | 3.97958 |
| 1991 | 3.96934 |
| 1990 | 3.96332 |
| 1989 | 3.97475 |
| 1988 | 4.01041 |
| 1987 | 4.03886 |
| 1986 | 4.05111 |
| 1985 | 4.05176 |
| 1984 | 4.03069 |
| 1983 | 3.96171 |
| 1982 | 3.87751 |
| 1981 | 3.81776 |
| 1980 | 3.77836 |
| 1979 | 3.75848 |
| 1978 | 3.78528 |
| 1977 | 3.83821 |
| 1976 | 3.87396 |
| 1975 | 3.87251 |
| 1974 | 3.79905 |
| 1973 | 3.68005 |
| 1972 | 3.56619 |
| 1971 | 3.49499 |
| 1970 | 3.48791 |
| 1969 | 3.51992 |
| 1968 | 3.58154 |
| 1967 | 3.6532 |
| 1966 | 3.69724 |
| 1965 | 3.70897 |
| 1964 | 3.69077 |
| 1963 | 3.65463 |
| 1962 | 3.61153 |
| 1961 | 3.55153 |
| 1960 | 3.48071 |