| 年份 | 萨摩亚 |
|---|---|
| 2023 | - |
| 2022 | 1.31378 |
| 2021 | 1.27117 |
| 2020 | 1.23867 |
| 2019 | 1.21409 |
| 2018 | 1.19796 |
| 2017 | 1.19206 |
| 2016 | 1.19425 |
| 2015 | 1.19673 |
| 2014 | 1.19925 |
| 2013 | 1.20183 |
| 2012 | 1.20641 |
| 2011 | 1.21178 |
| 2010 | 1.2121 |
| 2009 | 1.20676 |
| 2008 | 1.19712 |
| 2007 | 1.1832 |
| 2006 | 1.16261 |
| 2005 | 1.13806 |
| 2004 | 1.1172 |
| 2003 | 1.10649 |
| 2002 | 1.1107 |
| 2001 | 1.12995 |
| 2000 | 1.1638 |
| 1999 | 1.20627 |
| 1998 | 1.24384 |
| 1997 | 1.26442 |
| 1996 | 1.25821 |
| 1995 | 1.22059 |
| 1994 | 1.15568 |
| 1993 | 1.07474 |
| 1992 | 0.991804 |
| 1991 | 0.92555 |
| 1990 | 0.886366 |
| 1989 | 0.867479 |
| 1988 | 0.861087 |
| 1987 | 0.859789 |
| 1986 | 0.85452 |
| 1985 | 0.839217 |
| 1984 | 0.813567 |
| 1983 | 0.781497 |
| 1982 | 0.749094 |
| 1981 | 0.738168 |
| 1980 | 0.748099 |
| 1979 | 0.755071 |
| 1978 | 0.75369 |
| 1977 | 0.746848 |
| 1976 | 0.739289 |
| 1975 | 0.733761 |
| 1974 | 0.730697 |
| 1973 | 0.733591 |
| 1972 | 0.740682 |
| 1971 | 0.744084 |
| 1970 | 0.743019 |
| 1969 | 0.736524 |
| 1968 | 0.725606 |
| 1967 | 0.712765 |
| 1966 | 0.693758 |
| 1965 | 0.67623 |
| 1964 | 0.670889 |
| 1963 | 0.671378 |
| 1962 | 0.676368 |
| 1961 | 0.684363 |
| 1960 | 0.693416 |