| 年份 | 老挝 |
|---|---|
| 2023 | - |
| 2022 | 3.57357 |
| 2021 | 3.53513 |
| 2020 | 3.49266 |
| 2019 | 3.43735 |
| 2018 | 3.36542 |
| 2017 | 3.27959 |
| 2016 | 3.1829 |
| 2015 | 3.07743 |
| 2014 | 2.97321 |
| 2013 | 2.88222 |
| 2012 | 2.80262 |
| 2011 | 2.72856 |
| 2010 | 2.65897 |
| 2009 | 2.59497 |
| 2008 | 2.53725 |
| 2007 | 2.48365 |
| 2006 | 2.43394 |
| 2005 | 2.3911 |
| 2004 | 2.36777 |
| 2003 | 2.36504 |
| 2002 | 2.36655 |
| 2001 | 2.36588 |
| 2000 | 2.36283 |
| 1999 | 2.3584 |
| 1998 | 2.35725 |
| 1997 | 2.36283 |
| 1996 | 2.36995 |
| 1995 | 2.37646 |
| 1994 | 2.38555 |
| 1993 | 2.39552 |
| 1992 | 2.40693 |
| 1991 | 2.42509 |
| 1990 | 2.45305 |
| 1989 | 2.48904 |
| 1988 | 2.53246 |
| 1987 | 2.58124 |
| 1986 | 2.62885 |
| 1985 | 2.67108 |
| 1984 | 2.70775 |
| 1983 | 2.73779 |
| 1982 | 2.76103 |
| 1981 | 2.78099 |
| 1980 | 2.79926 |
| 1979 | 2.81465 |
| 1978 | 2.82692 |
| 1977 | 2.8379 |
| 1976 | 2.84866 |
| 1975 | 2.85976 |
| 1974 | 2.87229 |
| 1973 | 2.88627 |
| 1972 | 2.89885 |
| 1971 | 2.90721 |
| 1970 | 2.91034 |
| 1969 | 2.90805 |
| 1968 | 2.89897 |
| 1967 | 2.88536 |
| 1966 | 2.87327 |
| 1965 | 2.86602 |
| 1964 | 2.86333 |
| 1963 | 2.86637 |
| 1962 | 2.87239 |
| 1961 | 2.87197 |
| 1960 | 2.85949 |