| 年份 | 越南 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 7.317 |
| 2020 | 6.169 |
| 2019 | 6.706 |
| 2018 | 6.663 |
| 2017 | 6.577 |
| 2016 | 6.495 |
| 2015 | 6.444 |
| 2014 | 6.373 |
| 2013 | 6.327 |
| 2012 | 6.275 |
| 2011 | 6.195 |
| 2010 | 6.193 |
| 2009 | 6.117 |
| 2008 | 6.066 |
| 2007 | 5.966 |
| 2006 | 5.927 |
| 2005 | 5.865 |
| 2004 | 5.835 |
| 2003 | 5.812 |
| 2002 | 5.8 |
| 2001 | 5.769 |
| 2000 | 5.755 |
| 1999 | 5.729 |
| 1998 | 5.753 |
| 1997 | 5.817 |
| 1996 | 5.893 |
| 1995 | 5.924 |
| 1994 | 6.173 |
| 1993 | 6.228 |
| 1992 | 6.504 |
| 1991 | 6.549 |
| 1990 | 6.816 |
| 1989 | 6.875 |
| 1988 | 7.142 |
| 1987 | 7.19 |
| 1986 | 7.358 |
| 1985 | 7.554 |
| 1984 | 7.685 |
| 1983 | 7.754 |
| 1982 | 7.763 |
| 1981 | 7.954 |
| 1980 | 8.122 |
| 1979 | 8.157 |
| 1978 | 8.339 |
| 1977 | 8.534 |
| 1976 | 8.649 |
| 1975 | 9.48 |
| 1974 | 13 |
| 1973 | 12.523 |
| 1972 | 14.57 |
| 1971 | 12.508 |
| 1970 | 12.773 |
| 1969 | 12.817 |
| 1968 | 14.001 |
| 1967 | 11.792 |
| 1966 | 11.701 |
| 1965 | 11.676 |
| 1964 | 11.437 |
| 1963 | 11.813 |
| 1962 | 11.054 |
| 1961 | 10.9 |
| 1960 | 11.467 |