| 年份 | 越南  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | 7.71981 | 
| 2021 | 7.70328 | 
| 2020 | 7.68129 | 
| 2019 | 7.64942 | 
| 2018 | 7.60623 | 
| 2017 | 7.54068 | 
| 2016 | 7.42431 | 
| 2015 | 7.26033 | 
| 2014 | 7.06599 | 
| 2013 | 6.84371 | 
| 2012 | 6.61034 | 
| 2011 | 6.41965 | 
| 2010 | 6.31004 | 
| 2009 | 6.27934 | 
| 2008 | 6.30306 | 
| 2007 | 6.36359 | 
| 2006 | 6.35705 | 
| 2005 | 6.33121 | 
| 2004 | 6.35611 | 
| 2003 | 6.34656 | 
| 2002 | 6.3177 | 
| 2001 | 6.31438 | 
| 2000 | 6.23099 | 
| 1999 | 6.07096 | 
| 1998 | 5.88399 | 
| 1997 | 5.65732 | 
| 1996 | 5.42501 | 
| 1995 | 5.22172 | 
| 1994 | 5.04932 | 
| 1993 | 4.81238 | 
| 1992 | 4.48664 | 
| 1991 | 4.19226 | 
| 1990 | 3.92501 | 
| 1989 | 3.5964 | 
| 1988 | 3.37507 | 
| 1987 | 3.30312 | 
| 1986 | 3.27938 | 
| 1985 | 3.28333 | 
| 1984 | 3.31448 | 
| 1983 | 3.36987 | 
| 1982 | 3.44956 | 
| 1981 | 3.55571 | 
| 1980 | 3.68574 | 
| 1979 | 3.82727 | 
| 1978 | 3.99029 | 
| 1977 | 4.16683 | 
| 1976 | 4.31292 | 
| 1975 | 4.41022 | 
| 1974 | 4.46079 | 
| 1973 | 4.45919 | 
| 1972 | 4.41934 | 
| 1971 | 4.38963 | 
| 1970 | 4.40079 | 
| 1969 | 4.44857 | 
| 1968 | 4.53236 | 
| 1967 | 4.64422 | 
| 1966 | 4.74595 | 
| 1965 | 4.82053 | 
| 1964 | 4.87731 | 
| 1963 | 4.91621 | 
| 1962 | 4.93965 | 
| 1961 | 4.96544 | 
| 1960 | 5.03018 |