| 年份 | 越南 |
|---|---|
| 2023 | - |
| 2022 | 3.86048 |
| 2021 | 2.77826 |
| 2020 | 1.46748 |
| 2019 | 2.42323 |
| 2018 | 3.62665 |
| 2017 | 4.36292 |
| 2016 | 1.81954 |
| 2015 | -1.71651 |
| 2014 | 3.69814 |
| 2013 | 4.03852 |
| 2012 | 9.07766 |
| 2011 | 21.4137 |
| 2010 | 12.0743 |
| 2009 | 6.21562 |
| 2008 | 22.6733 |
| 2007 | 9.63023 |
| 2006 | 8.56895 |
| 2005 | 18.8105 |
| 2004 | 8.43331 |
| 2003 | 7.1096 |
| 2002 | 4.69893 |
| 2001 | 2.62226 |
| 2000 | 3.40883 |
| 1999 | 5.7347 |
| 1998 | 8.83786 |
| 1997 | 6.5974 |
| 1996 | 8.69677 |
| 1995 | 17.0402 |
| 1994 | 16.9523 |
| 1993 | 17.415 |
| 1992 | 32.6292 |
| 1991 | 72.5464 |
| 1990 | 42.0951 |
| 1989 | - |
| 1988 | - |
| 1987 | - |
| 1986 | - |
| 1985 | - |
| 1984 | - |
| 1983 | - |
| 1982 | - |
| 1981 | - |
| 1980 | - |
| 1979 | - |
| 1978 | - |
| 1977 | - |
| 1976 | - |
| 1975 | - |
| 1974 | - |
| 1973 | - |
| 1972 | - |
| 1971 | - |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |