| 年份 | 萨摩亚 |
|---|---|
| 2023 | - |
| 2022 | 1.07837 |
| 2021 | 1.07356 |
| 2020 | 1.06557 |
| 2019 | 1.0587 |
| 2018 | 1.05358 |
| 2017 | 1.05309 |
| 2016 | 1.05861 |
| 2015 | 1.06471 |
| 2014 | 1.07571 |
| 2013 | 1.0931 |
| 2012 | 1.10825 |
| 2011 | 1.10986 |
| 2010 | 1.09887 |
| 2009 | 1.08502 |
| 2008 | 1.07033 |
| 2007 | 1.05344 |
| 2006 | 1.01938 |
| 2005 | 0.960109 |
| 2004 | 0.883371 |
| 2003 | 0.795813 |
| 2002 | 0.706932 |
| 2001 | 0.648075 |
| 2000 | 0.616739 |
| 1999 | 0.596001 |
| 1998 | 0.58533 |
| 1997 | 0.580946 |
| 1996 | 0.582353 |
| 1995 | 0.581326 |
| 1994 | 0.580831 |
| 1993 | 0.58325 |
| 1992 | 0.583248 |
| 1991 | 0.583378 |
| 1990 | 0.58569 |
| 1989 | 0.580938 |
| 1988 | 0.568458 |
| 1987 | 0.547914 |
| 1986 | 0.539929 |
| 1985 | 0.550889 |
| 1984 | 0.554658 |
| 1983 | 0.54547 |
| 1982 | 0.527122 |
| 1981 | 0.519361 |
| 1980 | 0.52964 |
| 1979 | 0.53874 |
| 1978 | 0.538633 |
| 1977 | 0.529895 |
| 1976 | 0.509622 |
| 1975 | 0.491168 |
| 1974 | 0.479279 |
| 1973 | 0.466831 |
| 1972 | 0.455149 |
| 1971 | 0.44454 |
| 1970 | 0.436545 |
| 1969 | 0.431298 |
| 1968 | 0.429561 |
| 1967 | 0.433369 |
| 1966 | 0.455466 |
| 1965 | 0.496604 |
| 1964 | 0.556182 |
| 1963 | 0.640258 |
| 1962 | 0.750666 |
| 1961 | 0.783327 |
| 1960 | 0.746418 |