| 年份 | 汤加  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | 4.66399 | 
| 2021 | 4.64561 | 
| 2020 | 4.58414 | 
| 2019 | 4.38567 | 
| 2018 | 4.14956 | 
| 2017 | 3.98623 | 
| 2016 | 3.83945 | 
| 2015 | 3.73541 | 
| 2014 | 3.73976 | 
| 2013 | 3.73397 | 
| 2012 | 3.70847 | 
| 2011 | 3.64842 | 
| 2010 | 3.58071 | 
| 2009 | 3.53154 | 
| 2008 | 3.50056 | 
| 2007 | 3.48867 | 
| 2006 | 3.48682 | 
| 2005 | 3.47111 | 
| 2004 | 3.44111 | 
| 2003 | 3.43107 | 
| 2002 | 3.44669 | 
| 2001 | 3.47167 | 
| 2000 | 3.51367 | 
| 1999 | 3.55654 | 
| 1998 | 3.55547 | 
| 1997 | 3.52418 | 
| 1996 | 3.4898 | 
| 1995 | 3.46572 | 
| 1994 | 3.4711 | 
| 1993 | 3.51248 | 
| 1992 | 3.55185 | 
| 1991 | 3.55094 | 
| 1990 | 3.52573 | 
| 1989 | 3.49592 | 
| 1988 | 3.4617 | 
| 1987 | 3.43976 | 
| 1986 | 3.4398 | 
| 1985 | 3.44972 | 
| 1984 | 3.45084 | 
| 1983 | 3.43376 | 
| 1982 | 3.39803 | 
| 1981 | 3.34301 | 
| 1980 | 3.2766 | 
| 1979 | 3.20664 | 
| 1978 | 3.13763 | 
| 1977 | 3.07023 | 
| 1976 | 3.00227 | 
| 1975 | 2.93443 | 
| 1974 | 2.87058 | 
| 1973 | 2.81524 | 
| 1972 | 2.76573 | 
| 1971 | 2.71914 | 
| 1970 | 2.67222 | 
| 1969 | 2.62326 | 
| 1968 | 2.57855 | 
| 1967 | 2.54229 | 
| 1966 | 2.50637 | 
| 1965 | 2.47646 | 
| 1964 | 2.45874 | 
| 1963 | 2.44719 | 
| 1962 | 2.44348 | 
| 1961 | 2.44917 | 
| 1960 | 2.46923 |