| 年份 | 萨摩亚 |
|---|---|
| 2023 | - |
| 2022 | 2.9333 |
| 2021 | 2.86858 |
| 2020 | 2.81019 |
| 2019 | 2.75109 |
| 2018 | 2.68902 |
| 2017 | 2.62288 |
| 2016 | 2.55042 |
| 2015 | 2.46704 |
| 2014 | 2.37804 |
| 2013 | 2.28987 |
| 2012 | 2.20872 |
| 2011 | 2.14172 |
| 2010 | 2.09679 |
| 2009 | 2.08046 |
| 2008 | 2.09228 |
| 2007 | 2.12367 |
| 2006 | 2.15991 |
| 2005 | 2.19179 |
| 2004 | 2.21366 |
| 2003 | 2.21798 |
| 2002 | 2.2038 |
| 2001 | 2.18775 |
| 2000 | 2.17359 |
| 1999 | 2.1527 |
| 1998 | 2.13174 |
| 1997 | 2.12057 |
| 1996 | 2.12147 |
| 1995 | 2.13053 |
| 1994 | 2.15053 |
| 1993 | 2.17599 |
| 1992 | 2.20283 |
| 1991 | 2.21859 |
| 1990 | 2.21923 |
| 1989 | 2.20744 |
| 1988 | 2.17856 |
| 1987 | 2.12951 |
| 1986 | 2.06189 |
| 1985 | 1.98851 |
| 1984 | 1.91866 |
| 1983 | 1.86536 |
| 1982 | 1.83496 |
| 1981 | 1.80278 |
| 1980 | 1.74932 |
| 1979 | 1.6911 |
| 1978 | 1.64088 |
| 1977 | 1.60392 |
| 1976 | 1.56363 |
| 1975 | 1.49953 |
| 1974 | 1.4222 |
| 1973 | 1.36591 |
| 1972 | 1.34157 |
| 1971 | 1.33291 |
| 1970 | 1.33864 |
| 1969 | 1.35656 |
| 1968 | 1.38464 |
| 1967 | 1.41684 |
| 1966 | 1.45671 |
| 1965 | 1.50018 |
| 1964 | 1.53297 |
| 1963 | 1.5475 |
| 1962 | 1.53912 |
| 1961 | 1.51632 |
| 1960 | 1.48555 |