| 年份 | 越南 |
|---|---|
| 2023 | - |
| 2022 | 7.92227 |
| 2021 | 8.05974 |
| 2020 | 8.20182 |
| 2019 | 8.33968 |
| 2018 | 8.46825 |
| 2017 | 8.57927 |
| 2016 | 8.6506 |
| 2015 | 8.67849 |
| 2014 | 8.68293 |
| 2013 | 8.68055 |
| 2012 | 8.67525 |
| 2011 | 8.67132 |
| 2010 | 8.6916 |
| 2009 | 8.74687 |
| 2008 | 8.80575 |
| 2007 | 8.87027 |
| 2006 | 8.94559 |
| 2005 | 8.99882 |
| 2004 | 9.01619 |
| 2003 | 9.03438 |
| 2002 | 9.09793 |
| 2001 | 9.24458 |
| 2000 | 9.51731 |
| 1999 | 9.94545 |
| 1998 | 10.5176 |
| 1997 | 11.1645 |
| 1996 | 11.8216 |
| 1995 | 12.4301 |
| 1994 | 12.9362 |
| 1993 | 13.3398 |
| 1992 | 13.6791 |
| 1991 | 13.9925 |
| 1990 | 14.301 |
| 1989 | 14.6113 |
| 1988 | 14.9081 |
| 1987 | 15.1674 |
| 1986 | 15.3756 |
| 1985 | 15.5209 |
| 1984 | 15.6173 |
| 1983 | 15.6862 |
| 1982 | 15.731 |
| 1981 | 15.7683 |
| 1980 | 15.8307 |
| 1979 | 15.8024 |
| 1978 | 15.82 |
| 1977 | 15.9835 |
| 1976 | 16.0884 |
| 1975 | 16.117 |
| 1974 | 16.0946 |
| 1973 | 16.0096 |
| 1972 | 15.8792 |
| 1971 | 15.8177 |
| 1970 | 15.9067 |
| 1969 | 16.1389 |
| 1968 | 16.4811 |
| 1967 | 16.8932 |
| 1966 | 17.1172 |
| 1965 | 17.2878 |
| 1964 | 17.5874 |
| 1963 | 17.8094 |
| 1962 | 17.9944 |
| 1961 | 18.2393 |
| 1960 | 18.3051 |