| 年份 | 萨摩亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 16.7 |
| 2020 | 17.1 |
| 2019 | 17.5 |
| 2018 | 17.9 |
| 2017 | 18.2 |
| 2016 | 18.4 |
| 2015 | 18.6 |
| 2014 | 18.8 |
| 2013 | 19 |
| 2012 | 19.1 |
| 2011 | 19.3 |
| 2010 | 19.4 |
| 2009 | 25.7 |
| 2008 | 19.4 |
| 2007 | 19.3 |
| 2006 | 19.3 |
| 2005 | 19.3 |
| 2004 | 19.4 |
| 2003 | 19.7 |
| 2002 | 20.1 |
| 2001 | 20.6 |
| 2000 | 21.3 |
| 1999 | 22 |
| 1998 | 22.8 |
| 1997 | 23.7 |
| 1996 | 24.5 |
| 1995 | 25.3 |
| 1994 | 26.2 |
| 1993 | 27.1 |
| 1992 | 28 |
| 1991 | 28.9 |
| 1990 | 29.8 |
| 1989 | 30.8 |
| 1988 | 31.8 |
| 1987 | 33 |
| 1986 | 34.2 |
| 1985 | 35.6 |
| 1984 | 37 |
| 1983 | 38.6 |
| 1982 | 40.2 |
| 1981 | 42.1 |
| 1980 | 44.1 |
| 1979 | 46.2 |
| 1978 | 48.6 |
| 1977 | 51.1 |
| 1976 | 53.7 |
| 1975 | 56.5 |
| 1974 | 59.4 |
| 1973 | 62.4 |
| 1972 | 65.5 |
| 1971 | 68.8 |
| 1970 | 72.2 |
| 1969 | 75.7 |
| 1968 | 79.2 |
| 1967 | 82.6 |
| 1966 | 85.9 |
| 1965 | 89.2 |
| 1964 | 111.3 |
| 1963 | 95.6 |
| 1962 | 99 |
| 1961 | 102.9 |
| 1960 | 107.1 |