| 年份 | 越南 |
|---|---|
| 2023 | - |
| 2022 | 5.8726 |
| 2021 | 5.74927 |
| 2020 | 5.68962 |
| 2019 | 5.69318 |
| 2018 | 5.74063 |
| 2017 | 5.81806 |
| 2016 | 5.82942 |
| 2015 | 5.81654 |
| 2014 | 5.84142 |
| 2013 | 5.832 |
| 2012 | 5.80466 |
| 2011 | 5.8007 |
| 2010 | 5.72875 |
| 2009 | 5.58098 |
| 2008 | 5.39671 |
| 2007 | 5.17698 |
| 2006 | 4.95264 |
| 2005 | 4.75436 |
| 2004 | 4.58194 |
| 2003 | 4.35398 |
| 2002 | 4.05661 |
| 2001 | 3.78932 |
| 2000 | 3.54326 |
| 1999 | 3.25172 |
| 1998 | 3.05057 |
| 1997 | 2.96099 |
| 1996 | 2.90697 |
| 1995 | 2.87887 |
| 1994 | 2.87651 |
| 1993 | 2.8971 |
| 1992 | 2.94015 |
| 1991 | 3.00717 |
| 1990 | 3.09672 |
| 1989 | 3.20655 |
| 1988 | 3.33785 |
| 1987 | 3.47536 |
| 1986 | 3.58843 |
| 1985 | 3.65873 |
| 1984 | 3.68608 |
| 1983 | 3.66512 |
| 1982 | 3.60951 |
| 1981 | 3.56332 |
| 1980 | 3.55123 |
| 1979 | 3.55925 |
| 1978 | 3.59606 |
| 1977 | 3.66534 |
| 1976 | 3.72321 |
| 1975 | 3.74894 |
| 1974 | 3.74986 |
| 1973 | 3.72856 |
| 1972 | 3.69139 |
| 1971 | 3.66766 |
| 1970 | 3.67757 |
| 1969 | 3.71842 |
| 1968 | 3.79323 |
| 1967 | 3.89271 |
| 1966 | 3.98246 |
| 1965 | 4.04123 |
| 1964 | 4.07219 |
| 1963 | 4.07421 |
| 1962 | 4.05508 |
| 1961 | 4.04854 |
| 1960 | 4.09315 |