| 年份 | 老挝 |
|---|---|
| 2023 | - |
| 2022 | 1.3965 |
| 2021 | 1.43321 |
| 2020 | 1.47746 |
| 2019 | 1.4954 |
| 2018 | 1.51871 |
| 2017 | 1.53436 |
| 2016 | 1.51981 |
| 2015 | 1.42396 |
| 2014 | 1.36491 |
| 2013 | 1.40265 |
| 2012 | 1.43097 |
| 2011 | 1.4586 |
| 2010 | 1.48948 |
| 2009 | 1.52147 |
| 2008 | 1.55232 |
| 2007 | 1.58087 |
| 2006 | 1.58692 |
| 2005 | 1.45949 |
| 2004 | 1.38084 |
| 2003 | 1.46904 |
| 2002 | 1.55307 |
| 2001 | 1.62286 |
| 2000 | 1.68601 |
| 1999 | 1.75945 |
| 1998 | 1.85404 |
| 1997 | 2.09188 |
| 1996 | 2.33644 |
| 1995 | 2.45472 |
| 1994 | 2.58417 |
| 1993 | 2.6864 |
| 1992 | 2.7536 |
| 1991 | 2.80609 |
| 1990 | 2.84249 |
| 1989 | 2.86822 |
| 1988 | 2.86937 |
| 1987 | 2.85126 |
| 1986 | 2.81405 |
| 1985 | 2.75428 |
| 1984 | 2.67548 |
| 1983 | 2.57733 |
| 1982 | 2.42362 |
| 1981 | 2.2037 |
| 1980 | 1.95434 |
| 1979 | 1.73922 |
| 1978 | 1.65631 |
| 1977 | 1.73373 |
| 1976 | 1.9491 |
| 1975 | 2.20957 |
| 1974 | 2.38046 |
| 1973 | 2.43673 |
| 1972 | 2.43507 |
| 1971 | 2.41699 |
| 1970 | 2.38965 |
| 1969 | 2.36458 |
| 1968 | 2.34566 |
| 1967 | 2.31666 |
| 1966 | 2.30178 |
| 1965 | 2.29312 |
| 1964 | 2.27438 |
| 1963 | 2.29625 |
| 1962 | 2.29816 |
| 1961 | 2.26431 |
| 1960 | - |