| 年份 | 萨摩亚 |
|---|---|
| 2023 | - |
| 2022 | 4.9817 |
| 2021 | 5.02911 |
| 2020 | 5.10243 |
| 2019 | 5.20544 |
| 2018 | 5.32827 |
| 2017 | 5.47122 |
| 2016 | 5.63403 |
| 2015 | 5.80611 |
| 2014 | 5.97205 |
| 2013 | 6.11599 |
| 2012 | 6.22089 |
| 2011 | 6.26912 |
| 2010 | 6.25784 |
| 2009 | 6.21438 |
| 2008 | 6.16278 |
| 2007 | 6.11352 |
| 2006 | 6.06008 |
| 2005 | 6.00058 |
| 2004 | 5.93169 |
| 2003 | 5.85048 |
| 2002 | 5.76307 |
| 2001 | 5.67725 |
| 2000 | 5.59804 |
| 1999 | 5.51913 |
| 1998 | 5.43215 |
| 1997 | 5.33298 |
| 1996 | 5.21969 |
| 1995 | 5.09008 |
| 1994 | 4.9471 |
| 1993 | 4.7954 |
| 1992 | 4.64375 |
| 1991 | 4.48111 |
| 1990 | 4.31482 |
| 1989 | 4.15405 |
| 1988 | 3.99252 |
| 1987 | 3.84574 |
| 1986 | 3.74837 |
| 1985 | 3.70673 |
| 1984 | 3.69543 |
| 1983 | 3.69832 |
| 1982 | 3.71084 |
| 1981 | 3.75647 |
| 1980 | 3.84059 |
| 1979 | 3.93948 |
| 1978 | 4.03715 |
| 1977 | 4.12782 |
| 1976 | 4.13111 |
| 1975 | 3.99866 |
| 1974 | 3.77929 |
| 1973 | 3.63238 |
| 1972 | 3.62527 |
| 1971 | 3.70042 |
| 1970 | 3.85868 |
| 1969 | 4.05708 |
| 1968 | 4.24728 |
| 1967 | 4.38909 |
| 1966 | 4.47525 |
| 1965 | 4.5256 |
| 1964 | 4.55241 |
| 1963 | 4.56459 |
| 1962 | 4.57154 |
| 1961 | 4.60533 |
| 1960 | 4.65873 |