| 年份 | 萨摩亚 |
|---|---|
| 2023 | - |
| 2022 | 0.754576 |
| 2021 | 0.74854 |
| 2020 | 0.744751 |
| 2019 | 0.742049 |
| 2018 | 0.74184 |
| 2017 | 0.742091 |
| 2016 | 0.740519 |
| 2015 | 0.73944 |
| 2014 | 0.739673 |
| 2013 | 0.738952 |
| 2012 | 0.73673 |
| 2011 | 0.729348 |
| 2010 | 0.717965 |
| 2009 | 0.705745 |
| 2008 | 0.694989 |
| 2007 | 0.689859 |
| 2006 | 0.695109 |
| 2005 | 0.715454 |
| 2004 | 0.744801 |
| 2003 | 0.770937 |
| 2002 | 0.787609 |
| 2001 | 0.783033 |
| 2000 | 0.754275 |
| 1999 | 0.709324 |
| 1998 | 0.654624 |
| 1997 | 0.598397 |
| 1996 | 0.549754 |
| 1995 | 0.517098 |
| 1994 | 0.499233 |
| 1993 | 0.493121 |
| 1992 | 0.49478 |
| 1991 | 0.502538 |
| 1990 | 0.51667 |
| 1989 | 0.535879 |
| 1988 | 0.560642 |
| 1987 | 0.589115 |
| 1986 | 0.589836 |
| 1985 | 0.557382 |
| 1984 | 0.528819 |
| 1983 | 0.513719 |
| 1982 | 0.510169 |
| 1981 | 0.50818 |
| 1980 | 0.497562 |
| 1979 | 0.489409 |
| 1978 | 0.493324 |
| 1977 | 0.507327 |
| 1976 | 0.507918 |
| 1975 | 0.489174 |
| 1974 | 0.469552 |
| 1973 | 0.456069 |
| 1972 | 0.447824 |
| 1971 | 0.436716 |
| 1970 | 0.424679 |
| 1969 | 0.415757 |
| 1968 | 0.407235 |
| 1967 | 0.399462 |
| 1966 | 0.397056 |
| 1965 | 0.401861 |
| 1964 | 0.410795 |
| 1963 | 0.420887 |
| 1962 | 0.434232 |
| 1961 | 0.436863 |
| 1960 | 0.429747 |