| 年份 | 老挝 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 5.30329 |
| 2020 | 5.30329 |
| 2019 | 5.61352 |
| 2018 | 5.92461 |
| 2017 | 6.2357 |
| 2016 | 6.54679 |
| 2015 | 6.52816 |
| 2014 | 6.50953 |
| 2013 | 6.4909 |
| 2012 | 6.33904 |
| 2011 | 6.18718 |
| 2010 | 6.06586 |
| 2009 | 5.89255 |
| 2008 | 5.58925 |
| 2007 | 5.37262 |
| 2006 | 5.19931 |
| 2005 | 4.98267 |
| 2004 | 4.78769 |
| 2003 | 4.59272 |
| 2002 | 4.39775 |
| 2001 | 4.20277 |
| 2000 | 3.98614 |
| 1999 | 3.79983 |
| 1998 | 3.73484 |
| 1997 | 3.70017 |
| 1996 | 3.57019 |
| 1995 | 3.58752 |
| 1994 | 3.56153 |
| 1993 | 3.46187 |
| 1992 | 3.46187 |
| 1991 | 3.46187 |
| 1990 | 3.46187 |
| 1989 | 3.44454 |
| 1988 | 3.44454 |
| 1987 | 3.43588 |
| 1986 | 3.43588 |
| 1985 | 3.43154 |
| 1984 | 3.42288 |
| 1983 | 3.40121 |
| 1982 | 3.40121 |
| 1981 | 3.37955 |
| 1980 | 3.37955 |
| 1979 | 3.37955 |
| 1978 | 3.35789 |
| 1977 | 3.33622 |
| 1976 | 3.29289 |
| 1975 | 3.24957 |
| 1974 | 3.20624 |
| 1973 | 3.11958 |
| 1972 | 3.03293 |
| 1971 | 2.90295 |
| 1970 | 2.88128 |
| 1969 | 2.85962 |
| 1968 | 2.85095 |
| 1967 | 2.81629 |
| 1966 | 2.81629 |
| 1965 | 2.77296 |
| 1964 | 2.77296 |
| 1963 | 2.77296 |
| 1962 | 2.77296 |
| 1961 | 2.77296 |
| 1960 | - |