| 年份 | 越南  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | 0.734794 | 
| 2021 | 0.844182 | 
| 2020 | 0.906299 | 
| 2019 | 0.904491 | 
| 2018 | 0.93284 | 
| 2017 | 0.96872 | 
| 2016 | 1.00923 | 
| 2015 | 1.04227 | 
| 2014 | 1.0664 | 
| 2013 | 1.07638 | 
| 2012 | 1.07201 | 
| 2011 | 1.06749 | 
| 2010 | 1.06743 | 
| 2009 | 1.02939 | 
| 2008 | 0.980255 | 
| 2007 | 0.960768 | 
| 2006 | 0.969169 | 
| 2005 | 1.00436 | 
| 2004 | 1.02012 | 
| 2003 | 1.02829 | 
| 2002 | 1.02772 | 
| 2001 | 1.02839 | 
| 2000 | 1.11687 | 
| 1999 | 1.28218 | 
| 1998 | 1.39677 | 
| 1997 | 1.47303 | 
| 1996 | 1.59693 | 
| 1995 | 1.7203 | 
| 1994 | 1.84402 | 
| 1993 | 1.96886 | 
| 1992 | 2.07022 | 
| 1991 | 2.13831 | 
| 1990 | 2.1851 | 
| 1989 | 2.20674 | 
| 1988 | 2.22121 | 
| 1987 | 2.27649 | 
| 1986 | 2.32972 | 
| 1985 | 2.37614 | 
| 1984 | 2.41814 | 
| 1983 | 2.44907 | 
| 1982 | 2.45982 | 
| 1981 | 2.447 | 
| 1980 | 2.16971 | 
| 1979 | 2.20413 | 
| 1978 | 2.56369 | 
| 1977 | 2.57148 | 
| 1976 | 2.51021 | 
| 1975 | 2.30642 | 
| 1974 | 2.21932 | 
| 1973 | 2.21922 | 
| 1972 | 2.27922 | 
| 1971 | 2.32851 | 
| 1970 | 2.20152 | 
| 1969 | 2.14539 | 
| 1968 | 2.17243 | 
| 1967 | 2.30304 | 
| 1966 | 2.43145 | 
| 1965 | 2.58726 | 
| 1964 | 2.72781 | 
| 1963 | 2.83442 | 
| 1962 | 2.67611 | 
| 1961 | 2.72406 | 
| 1960 | - |