| 年份 | 越南 |
|---|---|
| 2023 | - |
| 2022 | 38.766 |
| 2021 | 38.052 |
| 2020 | 37.34 |
| 2019 | 36.628 |
| 2018 | 35.919 |
| 2017 | 35.213 |
| 2016 | 34.51 |
| 2015 | 33.809 |
| 2014 | 33.115 |
| 2013 | 32.429 |
| 2012 | 31.752 |
| 2011 | 31.08 |
| 2010 | 30.417 |
| 2009 | 29.762 |
| 2008 | 29.128 |
| 2007 | 28.504 |
| 2006 | 27.888 |
| 2005 | 27.281 |
| 2004 | 26.683 |
| 2003 | 26.092 |
| 2002 | 25.511 |
| 2001 | 24.937 |
| 2000 | 24.374 |
| 1999 | 23.817 |
| 1998 | 23.371 |
| 1997 | 22.965 |
| 1996 | 22.563 |
| 1995 | 22.166 |
| 1994 | 21.774 |
| 1993 | 21.387 |
| 1992 | 21.006 |
| 1991 | 20.629 |
| 1990 | 20.257 |
| 1989 | 19.891 |
| 1988 | 19.752 |
| 1987 | 19.688 |
| 1986 | 19.625 |
| 1985 | 19.561 |
| 1984 | 19.498 |
| 1983 | 19.435 |
| 1982 | 19.372 |
| 1981 | 19.309 |
| 1980 | 19.247 |
| 1979 | 19.175 |
| 1978 | 19.076 |
| 1977 | 18.978 |
| 1976 | 18.88 |
| 1975 | 18.782 |
| 1974 | 18.685 |
| 1973 | 18.588 |
| 1972 | 18.492 |
| 1971 | 18.396 |
| 1970 | 18.3 |
| 1969 | 17.911 |
| 1968 | 17.529 |
| 1967 | 17.153 |
| 1966 | 16.784 |
| 1965 | 16.421 |
| 1964 | 16.064 |
| 1963 | 15.714 |
| 1962 | 15.369 |
| 1961 | 15.031 |
| 1960 | 14.7 |