| 年份 | 萨摩亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 0.0516081 |
| 2020 | 0.052529 |
| 2019 | 0.0532786 |
| 2018 | 0.0588934 |
| 2017 | 0.0917979 |
| 2016 | 0.125326 |
| 2015 | 0.159453 |
| 2014 | 0.138781 |
| 2013 | 0.120037 |
| 2012 | 0.100947 |
| 2011 | 0.0814867 |
| 2010 | 0.0616421 |
| 2009 | 0.0408954 |
| 2008 | 0.0469271 |
| 2007 | 0.0524995 |
| 2006 | 0.0549163 |
| 2005 | 0.0583165 |
| 2004 | 0.063805 |
| 2003 | 0.0693555 |
| 2002 | 0.0696565 |
| 2001 | 0.0754595 |
| 2000 | 0.0760836 |
| 1999 | 0.0894567 |
| 1998 | 0.0942429 |
| 1997 | 0.0952152 |
| 1996 | 0.0962012 |
| 1995 | 0.0971973 |
| 1994 | 0.0982052 |
| 1993 | 0.0992052 |
| 1992 | 0.100118 |
| 1991 | 0.112625 |
| 1990 | 0.11297 |
| 1989 | 0.110194 |
| 1988 | 0.107493 |
| 1987 | 0.106132 |
| 1986 | 0.104589 |
| 1985 | 0.102092 |
| 1984 | 0.101931 |
| 1983 | 0.0994345 |
| 1982 | 0.0958744 |
| 1981 | 0.0962753 |
| 1980 | 0.0970256 |
| 1979 | 0.0948076 |
| 1978 | 0.0925995 |
| 1977 | 0.0935384 |
| 1976 | 0.0948551 |
| 1975 | 0.0901696 |
| 1974 | 0.0853915 |
| 1973 | 0.0869059 |
| 1972 | 0.0882361 |
| 1971 | 0.0896156 |
| 1970 | 0.0875528 |
| 1969 | 0.0854354 |
| 1968 | 0.0868596 |
| 1967 | 0.0810301 |
| 1966 | 0.0827217 |
| 1965 | 0.0847529 |
| 1964 | 0.0869002 |
| 1963 | 0.0891294 |
| 1962 | 0.0915423 |
| 1961 | 0.0856018 |
| 1960 | - |