| 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 |