| 年份 | 萨摩亚 |
|---|---|
| 2023 | - |
| 2022 | 1.79321 |
| 2021 | 1.9477 |
| 2020 | 1.62061 |
| 2019 | 1.2739 |
| 2018 | 1.24839 |
| 2017 | 1.29109 |
| 2016 | 1.25102 |
| 2015 | 1.1853 |
| 2014 | 1.19766 |
| 2013 | 1.20903 |
| 2012 | 1.18887 |
| 2011 | 1.13503 |
| 2010 | 1.04993 |
| 2009 | 1.00267 |
| 2008 | 0.969752 |
| 2007 | 0.870933 |
| 2006 | 0.69875 |
| 2005 | 0.597327 |
| 2004 | 0.644513 |
| 2003 | 0.743376 |
| 2002 | 0.754476 |
| 2001 | 0.706565 |
| 2000 | 0.86534 |
| 1999 | 0.892031 |
| 1998 | 0.910075 |
| 1997 | 0.916267 |
| 1996 | 0.915268 |
| 1995 | 0.917105 |
| 1994 | 0.900365 |
| 1993 | 0.803032 |
| 1992 | 0.575311 |
| 1991 | 0.305123 |
| 1990 | 0.178986 |
| 1989 | 0.25885 |
| 1988 | 0.406275 |
| 1987 | 0.244559 |
| 1986 | -0.090732 |
| 1985 | -0.157632 |
| 1984 | -0.0988691 |
| 1983 | 0.0357337 |
| 1982 | 0.408422 |
| 1981 | 0.750313 |
| 1980 | 0.837407 |
| 1979 | 0.896909 |
| 1978 | 0.983253 |
| 1977 | 1.34732 |
| 1976 | 1.73108 |
| 1975 | 1.86451 |
| 1974 | 1.65729 |
| 1973 | 1.41764 |
| 1972 | 1.37375 |
| 1971 | 1.26882 |
| 1970 | 1.31363 |
| 1969 | 1.33653 |
| 1968 | 1.44164 |
| 1967 | 1.80355 |
| 1966 | 2.32622 |
| 1965 | 2.40216 |
| 1964 | 2.43423 |
| 1963 | 2.57205 |
| 1962 | 2.72867 |
| 1961 | 2.9553 |
| 1960 | - |