| 年份 | 老挝 |
|---|---|
| 2023 | - |
| 2022 | 2.60773 |
| 2021 | 2.55753 |
| 2020 | 2.50628 |
| 2019 | 2.44862 |
| 2018 | 2.3831 |
| 2017 | 2.31407 |
| 2016 | 2.24503 |
| 2015 | 2.17702 |
| 2014 | 2.10626 |
| 2013 | 2.03438 |
| 2012 | 1.96785 |
| 2011 | 1.90825 |
| 2010 | 1.85685 |
| 2009 | 1.81394 |
| 2008 | 1.78033 |
| 2007 | 1.75648 |
| 2006 | 1.74182 |
| 2005 | 1.73289 |
| 2004 | 1.7216 |
| 2003 | 1.70846 |
| 2002 | 1.70047 |
| 2001 | 1.69719 |
| 2000 | 1.69568 |
| 1999 | 1.69441 |
| 1998 | 1.69036 |
| 1997 | 1.68214 |
| 1996 | 1.68191 |
| 1995 | 1.69428 |
| 1994 | 1.71098 |
| 1993 | 1.7311 |
| 1992 | 1.75391 |
| 1991 | 1.77727 |
| 1990 | 1.79969 |
| 1989 | 1.82068 |
| 1988 | 1.83961 |
| 1987 | 1.85632 |
| 1986 | 1.87197 |
| 1985 | 1.88737 |
| 1984 | 1.90209 |
| 1983 | 1.91555 |
| 1982 | 1.92754 |
| 1981 | 1.93738 |
| 1980 | 1.94435 |
| 1979 | 1.94876 |
| 1978 | 1.95174 |
| 1977 | 1.95297 |
| 1976 | 1.95223 |
| 1975 | 1.94966 |
| 1974 | 1.94543 |
| 1973 | 1.93922 |
| 1972 | 1.93128 |
| 1971 | 1.92535 |
| 1970 | 1.92449 |
| 1969 | 1.92834 |
| 1968 | 1.93763 |
| 1967 | 1.95042 |
| 1966 | 1.95983 |
| 1965 | 1.96115 |
| 1964 | 1.95475 |
| 1963 | 1.94022 |
| 1962 | 1.9184 |
| 1961 | 1.89648 |
| 1960 | 1.87946 |