| 年份 | 老挝 |
|---|---|
| 2023 | - |
| 2022 | 0.355601 |
| 2021 | 0.40931 |
| 2020 | 0.470139 |
| 2019 | 0.504295 |
| 2018 | 0.544946 |
| 2017 | 0.576024 |
| 2016 | 0.576564 |
| 2015 | 0.499877 |
| 2014 | 0.458082 |
| 2013 | 0.514178 |
| 2012 | 0.556094 |
| 2011 | 0.602723 |
| 2010 | 0.650819 |
| 2009 | 0.699606 |
| 2008 | 0.744151 |
| 2007 | 0.791639 |
| 2006 | 0.81208 |
| 2005 | 0.171366 |
| 2004 | -0.120882 |
| 2003 | 0.0343046 |
| 2002 | 0.178852 |
| 2001 | 0.31214 |
| 2000 | 0.430182 |
| 1999 | 0.561738 |
| 1998 | 0.711285 |
| 1997 | 1.00238 |
| 1996 | 1.295 |
| 1995 | 1.82251 |
| 1994 | 2.14733 |
| 1993 | 2.25981 |
| 1992 | 2.33596 |
| 1991 | 2.39729 |
| 1990 | 2.44238 |
| 1989 | 2.47796 |
| 1988 | 2.48645 |
| 1987 | 2.47679 |
| 1986 | 2.44909 |
| 1985 | 2.40685 |
| 1984 | 2.34076 |
| 1983 | 2.25061 |
| 1982 | 2.10257 |
| 1981 | 1.89164 |
| 1980 | 1.64667 |
| 1979 | 1.43931 |
| 1978 | 1.36295 |
| 1977 | 1.44799 |
| 1976 | 1.66758 |
| 1975 | 1.93553 |
| 1974 | 2.11163 |
| 1973 | 2.09949 |
| 1972 | 2.05679 |
| 1971 | 2.05117 |
| 1970 | 2.0351 |
| 1969 | 2.02335 |
| 1968 | 2.01436 |
| 1967 | 1.99738 |
| 1966 | 2.21776 |
| 1965 | 2.20918 |
| 1964 | 2.19157 |
| 1963 | 2.21462 |
| 1962 | 2.2166 |
| 1961 | 2.18385 |
| 1960 | - |