| 年份 | 越南 |
|---|---|
| 2023 | - |
| 2022 | 8.03199 |
| 2021 | 8.03521 |
| 2020 | 8.01366 |
| 2019 | 7.97589 |
| 2018 | 7.92509 |
| 2017 | 7.86223 |
| 2016 | 7.79755 |
| 2015 | 7.74658 |
| 2014 | 7.70386 |
| 2013 | 7.67483 |
| 2012 | 7.64474 |
| 2011 | 7.57576 |
| 2010 | 7.46777 |
| 2009 | 7.33561 |
| 2008 | 7.17375 |
| 2007 | 6.99384 |
| 2006 | 6.85097 |
| 2005 | 6.78356 |
| 2004 | 6.78896 |
| 2003 | 6.84554 |
| 2002 | 6.93542 |
| 2001 | 6.94239 |
| 2000 | 6.91757 |
| 1999 | 6.94617 |
| 1998 | 6.94177 |
| 1997 | 6.91911 |
| 1996 | 6.93233 |
| 1995 | 6.87393 |
| 1994 | 6.73691 |
| 1993 | 6.57196 |
| 1992 | 6.37562 |
| 1991 | 6.17706 |
| 1990 | 6.01142 |
| 1989 | 5.87805 |
| 1988 | 5.67027 |
| 1987 | 5.36546 |
| 1986 | 5.09381 |
| 1985 | 4.84274 |
| 1984 | 4.51093 |
| 1983 | 4.2861 |
| 1982 | 4.21057 |
| 1981 | 4.17975 |
| 1980 | 4.17915 |
| 1979 | 4.21551 |
| 1978 | 4.27629 |
| 1977 | 4.35333 |
| 1976 | 4.46479 |
| 1975 | 4.61301 |
| 1974 | 4.79151 |
| 1973 | 5.00595 |
| 1972 | 5.23118 |
| 1971 | 5.41442 |
| 1970 | 5.53394 |
| 1969 | 5.59049 |
| 1968 | 5.57217 |
| 1967 | 5.50051 |
| 1966 | 5.44538 |
| 1965 | 5.44761 |
| 1964 | 5.50076 |
| 1963 | 5.6039 |
| 1962 | 5.74622 |
| 1961 | 5.86034 |
| 1960 | 5.92677 |