| 年份 | 越南 |
|---|---|
| 2023 | - |
| 2022 | 7.05464 |
| 2021 | 6.93306 |
| 2020 | 6.76427 |
| 2019 | 6.57 |
| 2018 | 6.35109 |
| 2017 | 6.1239 |
| 2016 | 5.93967 |
| 2015 | 5.83366 |
| 2014 | 5.804 |
| 2013 | 5.83439 |
| 2012 | 5.90902 |
| 2011 | 5.92592 |
| 2010 | 5.9269 |
| 2009 | 5.97312 |
| 2008 | 5.97821 |
| 2007 | 5.95593 |
| 2006 | 5.95502 |
| 2005 | 5.87854 |
| 2004 | 5.71584 |
| 2003 | 5.51232 |
| 2002 | 5.26807 |
| 2001 | 5.01253 |
| 2000 | 4.77795 |
| 1999 | 4.58137 |
| 1998 | 4.338 |
| 1997 | 4.01525 |
| 1996 | 3.724 |
| 1995 | 3.4622 |
| 1994 | 3.15322 |
| 1993 | 2.94609 |
| 1992 | 2.87446 |
| 1991 | 2.8469 |
| 1990 | 2.84445 |
| 1989 | 2.86612 |
| 1988 | 2.90736 |
| 1987 | 2.96818 |
| 1986 | 3.0526 |
| 1985 | 3.15924 |
| 1984 | 3.28512 |
| 1983 | 3.43222 |
| 1982 | 3.5845 |
| 1981 | 3.70879 |
| 1980 | 3.78659 |
| 1979 | 3.80286 |
| 1978 | 3.77209 |
| 1977 | 3.72646 |
| 1976 | 3.69348 |
| 1975 | 3.6993 |
| 1974 | 3.73893 |
| 1973 | 3.81256 |
| 1972 | 3.91356 |
| 1971 | 4.00472 |
| 1970 | 4.06582 |
| 1969 | 4.10536 |
| 1968 | 4.12527 |
| 1967 | 4.12793 |
| 1966 | 4.14078 |
| 1965 | 4.18879 |
| 1964 | 4.27233 |
| 1963 | 4.39314 |
| 1962 | 4.54046 |
| 1961 | 4.66449 |
| 1960 | 4.75096 |