| 年份 | 萨摩亚 |
|---|---|
| 2023 | - |
| 2022 | 1.64031 |
| 2021 | 1.76858 |
| 2020 | 1.41697 |
| 2019 | 1.04554 |
| 2018 | 0.992506 |
| 2017 | 1.00975 |
| 2016 | 0.964528 |
| 2015 | 0.895084 |
| 2014 | 0.905168 |
| 2013 | 0.911922 |
| 2012 | 0.898922 |
| 2011 | 0.858778 |
| 2010 | 0.77144 |
| 2009 | 0.721631 |
| 2008 | 0.684868 |
| 2007 | 0.57864 |
| 2006 | 0.398408 |
| 2005 | 0.293603 |
| 2004 | 0.337139 |
| 2003 | 0.433075 |
| 2002 | 0.591145 |
| 2001 | 0.823736 |
| 2000 | 0.981388 |
| 1999 | 1.00719 |
| 1998 | 1.0264 |
| 1997 | 1.03025 |
| 1996 | 1.03011 |
| 1995 | 1.03159 |
| 1994 | 1.01316 |
| 1993 | 0.916289 |
| 1992 | 0.648747 |
| 1991 | 0.305741 |
| 1990 | 0.178533 |
| 1989 | 0.258843 |
| 1988 | 0.406314 |
| 1987 | 0.244944 |
| 1986 | -0.0913237 |
| 1985 | -0.157218 |
| 1984 | -0.0988844 |
| 1983 | 0.0353474 |
| 1982 | 0.417324 |
| 1981 | 0.776216 |
| 1980 | 0.862384 |
| 1979 | 0.922345 |
| 1978 | 1.00885 |
| 1977 | 1.39783 |
| 1976 | 1.8335 |
| 1975 | 1.96622 |
| 1974 | 1.75801 |
| 1973 | 1.51896 |
| 1972 | 1.55135 |
| 1971 | 1.59331 |
| 1970 | 1.63406 |
| 1969 | 1.65324 |
| 1968 | 1.75393 |
| 1967 | 2.0661 |
| 1966 | 2.42586 |
| 1965 | 2.50197 |
| 1964 | 2.53296 |
| 1963 | 2.67116 |
| 1962 | 2.82149 |
| 1961 | 3.02863 |
| 1960 | - |