| 年份 | 美属萨摩亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 0.0215388 |
| 2020 | 0.0207842 |
| 2019 | 0.0200757 |
| 2018 | 0.0194119 |
| 2017 | 0.0188019 |
| 2016 | 0.0182366 |
| 2015 | 0.0177153 |
| 2014 | 0.0172358 |
| 2013 | 0.016794 |
| 2012 | 0.0163901 |
| 2011 | 0.0160191 |
| 2010 | 0.0156794 |
| 2009 | 0.0153524 |
| 2008 | 0.0150293 |
| 2007 | 0.0147207 |
| 2006 | 0.0144272 |
| 2005 | 0.0141475 |
| 2004 | 0.0138826 |
| 2003 | 0.0136346 |
| 2002 | 0.0134074 |
| 2001 | 0.0132021 |
| 2000 | 0.0130517 |
| 1999 | 0.0130222 |
| 1998 | 0.0128968 |
| 1997 | 0.0129548 |
| 1996 | 0.0130275 |
| 1995 | 0.0131084 |
| 1994 | 0.0131961 |
| 1993 | 0.013288 |
| 1992 | 0.0133791 |
| 1991 | 0.0132675 |
| 1990 | 0.0133841 |
| 1989 | 0.0138265 |
| 1988 | 0.0143717 |
| 1987 | 0.0149386 |
| 1986 | 0.0155261 |
| 1985 | 0.0161359 |
| 1984 | 0.016768 |
| 1983 | 0.0174221 |
| 1982 | 0.018096 |
| 1981 | 0.0187909 |
| 1980 | 0.0194612 |
| 1979 | 0.0199719 |
| 1978 | 0.020364 |
| 1977 | 0.0207684 |
| 1976 | 0.0211935 |
| 1975 | 0.0216414 |
| 1974 | 0.0220598 |
| 1973 | 0.0224333 |
| 1972 | 0.0228058 |
| 1971 | 0.0231943 |
| 1970 | 0.023638 |
| 1969 | 0.0242461 |
| 1968 | 0.0249922 |
| 1967 | 0.0257566 |
| 1966 | 0.0265318 |
| 1965 | 0.027361 |
| 1964 | 0.0282486 |
| 1963 | 0.0291585 |
| 1962 | 0.0300865 |
| 1961 | 0.0310288 |
| 1960 | - |