| 年份 | 老挝 |
|---|---|
| 2023 | - |
| 2022 | 4.45475 |
| 2021 | 4.35718 |
| 2020 | 4.27858 |
| 2019 | 4.20669 |
| 2018 | 4.15416 |
| 2017 | 4.12603 |
| 2016 | 4.12332 |
| 2015 | 4.15107 |
| 2014 | 4.13432 |
| 2013 | 4.06049 |
| 2012 | 3.99499 |
| 2011 | 3.93633 |
| 2010 | 3.88547 |
| 2009 | 3.84366 |
| 2008 | 3.81212 |
| 2007 | 3.79078 |
| 2006 | 3.78086 |
| 2005 | 3.78086 |
| 2004 | 3.75971 |
| 2003 | 3.71253 |
| 2002 | 3.66119 |
| 2001 | 3.60496 |
| 2000 | 3.54721 |
| 1999 | 3.4895 |
| 1998 | 3.43085 |
| 1997 | 3.37086 |
| 1996 | 3.34465 |
| 1995 | 3.35377 |
| 1994 | 3.36351 |
| 1993 | 3.37308 |
| 1992 | 3.38143 |
| 1991 | 3.38927 |
| 1990 | 3.39758 |
| 1989 | 3.40504 |
| 1988 | 3.41063 |
| 1987 | 3.41463 |
| 1986 | 3.41555 |
| 1985 | 3.41271 |
| 1984 | 3.40655 |
| 1983 | 3.39685 |
| 1982 | 3.38297 |
| 1981 | 3.36471 |
| 1980 | 3.34219 |
| 1979 | 3.31691 |
| 1978 | 3.29011 |
| 1977 | 3.26243 |
| 1976 | 3.23664 |
| 1975 | 3.21286 |
| 1974 | 3.19085 |
| 1973 | 3.17107 |
| 1972 | 3.15032 |
| 1971 | 3.12504 |
| 1970 | 3.09448 |
| 1969 | 3.05933 |
| 1968 | 3.01793 |
| 1967 | 2.97158 |
| 1966 | 2.92472 |
| 1965 | 2.87877 |
| 1964 | 2.83318 |
| 1963 | 2.78906 |
| 1962 | 2.7458 |
| 1961 | 2.70058 |
| 1960 | 2.65221 |