| 年份 | 萨摩亚 |
|---|---|
| 2023 | - |
| 2022 | 0.98801 |
| 2021 | 1.00407 |
| 2020 | 1.02711 |
| 2019 | 1.05051 |
| 2018 | 1.06479 |
| 2017 | 1.07083 |
| 2016 | 1.06906 |
| 2015 | 1.05817 |
| 2014 | 1.04319 |
| 2013 | 1.0269 |
| 2012 | 1.01702 |
| 2011 | 1.01092 |
| 2010 | 1.00267 |
| 2009 | 1.00077 |
| 2008 | 1.00098 |
| 2007 | 0.997079 |
| 2006 | 1.00301 |
| 2005 | 1.02101 |
| 2004 | 1.03657 |
| 2003 | 1.04724 |
| 2002 | 1.04619 |
| 2001 | 1.02065 |
| 2000 | 0.975228 |
| 1999 | 0.91719 |
| 1998 | 0.851074 |
| 1997 | 0.785917 |
| 1996 | 0.729274 |
| 1995 | 0.688601 |
| 1994 | 0.6645 |
| 1993 | 0.651326 |
| 1992 | 0.648328 |
| 1991 | 0.653333 |
| 1990 | 0.657804 |
| 1989 | 0.668331 |
| 1988 | 0.690856 |
| 1987 | 0.7166 |
| 1986 | 0.713977 |
| 1985 | 0.68624 |
| 1984 | 0.670997 |
| 1983 | 0.676834 |
| 1982 | 0.698469 |
| 1981 | 0.700388 |
| 1980 | 0.676832 |
| 1979 | 0.662479 |
| 1978 | 0.67185 |
| 1977 | 0.705879 |
| 1976 | 0.716225 |
| 1975 | 0.681362 |
| 1974 | 0.645157 |
| 1973 | 0.633507 |
| 1972 | 0.636366 |
| 1971 | 0.637197 |
| 1970 | 0.635238 |
| 1969 | 0.626673 |
| 1968 | 0.61323 |
| 1967 | 0.599698 |
| 1966 | 0.577702 |
| 1965 | 0.553997 |
| 1964 | 0.542298 |
| 1963 | 0.537315 |
| 1962 | 0.537662 |
| 1961 | 0.529872 |
| 1960 | 0.516121 |