| 年份 | 汤加 |
|---|---|
| 2023 | - |
| 2022 | 8.66329 |
| 2021 | 8.4877 |
| 2020 | 8.33404 |
| 2019 | 8.26433 |
| 2018 | 8.31234 |
| 2017 | 8.37128 |
| 2016 | 8.39557 |
| 2015 | 8.38705 |
| 2014 | 8.35192 |
| 2013 | 8.25511 |
| 2012 | 8.14483 |
| 2011 | 8.21409 |
| 2010 | 8.40969 |
| 2009 | 8.60848 |
| 2008 | 8.83321 |
| 2007 | 8.98554 |
| 2006 | 9.07605 |
| 2005 | 9.14256 |
| 2004 | 9.16694 |
| 2003 | 9.16864 |
| 2002 | 9.15399 |
| 2001 | 9.11338 |
| 2000 | 9.04082 |
| 1999 | 8.96316 |
| 1998 | 8.9183 |
| 1997 | 8.93081 |
| 1996 | 9.03954 |
| 1995 | 9.25617 |
| 1994 | 9.53838 |
| 1993 | 9.83474 |
| 1992 | 10.1176 |
| 1991 | 10.32 |
| 1990 | 10.3843 |
| 1989 | 10.2985 |
| 1988 | 10.0526 |
| 1987 | 9.68301 |
| 1986 | 9.32037 |
| 1985 | 9.08655 |
| 1984 | 8.97782 |
| 1983 | 8.94473 |
| 1982 | 8.9386 |
| 1981 | 8.92312 |
| 1980 | 8.87899 |
| 1979 | 8.78226 |
| 1978 | 8.62795 |
| 1977 | 8.43002 |
| 1976 | 8.27948 |
| 1975 | 8.20631 |
| 1974 | 8.15246 |
| 1973 | 8.08901 |
| 1972 | 7.99692 |
| 1971 | 7.95509 |
| 1970 | 7.99643 |
| 1969 | 8.06727 |
| 1968 | 8.15078 |
| 1967 | 8.26811 |
| 1966 | 8.33086 |
| 1965 | 8.31277 |
| 1964 | 8.318 |
| 1963 | 8.35575 |
| 1962 | 8.41613 |
| 1961 | 8.48995 |
| 1960 | 8.57764 |