| 年份 | 越南 |
|---|---|
| 2023 | - |
| 2022 | 2.79509 |
| 2021 | 2.60568 |
| 2020 | 2.43144 |
| 2019 | 2.21696 |
| 2018 | 2.06335 |
| 2017 | 1.98843 |
| 2016 | 1.93799 |
| 2015 | 1.9046 |
| 2014 | 1.88744 |
| 2013 | 1.88401 |
| 2012 | 1.89326 |
| 2011 | 1.91524 |
| 2010 | 1.94883 |
| 2009 | 1.99229 |
| 2008 | 2.0451 |
| 2007 | 2.09764 |
| 2006 | 2.13233 |
| 2005 | 2.13954 |
| 2004 | 2.12033 |
| 2003 | 2.07237 |
| 2002 | 2.00479 |
| 2001 | 1.94248 |
| 2000 | 1.89882 |
| 1999 | 1.87239 |
| 1998 | 1.86346 |
| 1997 | 1.86738 |
| 1996 | 1.86586 |
| 1995 | 1.84913 |
| 1994 | 1.82165 |
| 1993 | 1.78412 |
| 1992 | 1.74026 |
| 1991 | 1.70427 |
| 1990 | 1.6859 |
| 1989 | 1.68433 |
| 1988 | 1.7011 |
| 1987 | 1.73251 |
| 1986 | 1.76015 |
| 1985 | 1.77386 |
| 1984 | 1.77427 |
| 1983 | 1.75745 |
| 1982 | 1.72699 |
| 1981 | 1.70464 |
| 1980 | 1.70246 |
| 1979 | 1.71512 |
| 1978 | 1.74621 |
| 1977 | 1.79383 |
| 1976 | 1.832 |
| 1975 | 1.84619 |
| 1974 | 1.84543 |
| 1973 | 1.82807 |
| 1972 | 1.79431 |
| 1971 | 1.76043 |
| 1970 | 1.73465 |
| 1969 | 1.71733 |
| 1968 | 1.7109 |
| 1967 | 1.71165 |
| 1966 | 1.70754 |
| 1965 | 1.69761 |
| 1964 | 1.6843 |
| 1963 | 1.67036 |
| 1962 | 1.65273 |
| 1961 | 1.62747 |
| 1960 | 1.60217 |