| 年份 | 萨摩亚 |
|---|---|
| 2023 | - |
| 2022 | 1.4577 |
| 2021 | 1.40141 |
| 2020 | 1.36758 |
| 2019 | 1.3541 |
| 2018 | 1.36157 |
| 2017 | 1.38409 |
| 2016 | 1.41463 |
| 2015 | 1.44863 |
| 2014 | 1.48068 |
| 2013 | 1.50417 |
| 2012 | 1.51723 |
| 2011 | 1.51454 |
| 2010 | 1.49529 |
| 2009 | 1.46677 |
| 2008 | 1.4332 |
| 2007 | 1.40296 |
| 2006 | 1.38555 |
| 2005 | 1.38091 |
| 2004 | 1.38871 |
| 2003 | 1.40444 |
| 2002 | 1.42111 |
| 2001 | 1.44035 |
| 2000 | 1.46171 |
| 1999 | 1.47884 |
| 1998 | 1.49025 |
| 1997 | 1.4875 |
| 1996 | 1.45736 |
| 1995 | 1.40297 |
| 1994 | 1.32839 |
| 1993 | 1.24255 |
| 1992 | 1.1572 |
| 1991 | 1.07681 |
| 1990 | 1.00646 |
| 1989 | 0.955028 |
| 1988 | 0.925558 |
| 1987 | 0.915727 |
| 1986 | 0.924867 |
| 1985 | 0.929112 |
| 1984 | 0.911852 |
| 1983 | 0.882636 |
| 1982 | 0.850499 |
| 1981 | 0.845834 |
| 1980 | 0.862394 |
| 1979 | 0.861095 |
| 1978 | 0.844136 |
| 1977 | 0.821046 |
| 1976 | 0.821823 |
| 1975 | 0.850868 |
| 1974 | 0.87154 |
| 1973 | 0.879025 |
| 1972 | 0.883607 |
| 1971 | 0.89122 |
| 1970 | 0.899196 |
| 1969 | 0.908307 |
| 1968 | 0.919845 |
| 1967 | 0.930066 |
| 1966 | 0.908595 |
| 1965 | 0.864075 |
| 1964 | 0.831414 |
| 1963 | 0.799277 |
| 1962 | 0.766984 |
| 1961 | 0.75595 |
| 1960 | 0.764623 |