| 年份 | 老挝 |
|---|---|
| 2023 | - |
| 2022 | 3.14882 |
| 2021 | 3.20579 |
| 2020 | 3.27081 |
| 2019 | 3.31006 |
| 2018 | 3.35234 |
| 2017 | 3.39041 |
| 2016 | 3.39885 |
| 2015 | 3.31745 |
| 2014 | 3.27616 |
| 2013 | 3.3287 |
| 2012 | 3.3818 |
| 2011 | 3.42167 |
| 2010 | 3.46805 |
| 2009 | 3.5158 |
| 2008 | 3.56955 |
| 2007 | 3.60717 |
| 2006 | 3.63314 |
| 2005 | 4.99358 |
| 2004 | 5.72665 |
| 2003 | 5.87077 |
| 2002 | 6.02266 |
| 2001 | 6.14214 |
| 2000 | 6.27633 |
| 1999 | 6.40075 |
| 1998 | 6.54861 |
| 1997 | 6.83662 |
| 1996 | 7.14472 |
| 1995 | 5.51639 |
| 1994 | 4.76761 |
| 1993 | 4.87511 |
| 1992 | 4.95322 |
| 1991 | 5.01633 |
| 1990 | 5.06312 |
| 1989 | 5.0916 |
| 1988 | 5.10878 |
| 1987 | 5.0995 |
| 1986 | 5.06332 |
| 1985 | 4.95145 |
| 1984 | 4.84641 |
| 1983 | 4.7501 |
| 1982 | 4.61277 |
| 1981 | 4.3855 |
| 1980 | 4.15998 |
| 1979 | 3.9439 |
| 1978 | 3.8675 |
| 1977 | 3.94207 |
| 1976 | 4.17992 |
| 1975 | 4.43616 |
| 1974 | 4.62016 |
| 1973 | 5.3281 |
| 1972 | 5.79321 |
| 1971 | 5.78814 |
| 1970 | 5.78152 |
| 1969 | 5.75344 |
| 1968 | 5.76115 |
| 1967 | 5.73382 |
| 1966 | 3.22258 |
| 1965 | 3.22241 |
| 1964 | 3.20041 |
| 1963 | 3.21834 |
| 1962 | 3.22884 |
| 1961 | 3.1918 |
| 1960 | - |