| 年份 | 老挝 |
|---|---|
| 2023 | - |
| 2022 | 1.14141 |
| 2021 | 1.10516 |
| 2020 | 1.0739 |
| 2019 | 1.04337 |
| 2018 | 1.01754 |
| 2017 | 0.998865 |
| 2016 | 0.986533 |
| 2015 | 0.980192 |
| 2014 | 0.976568 |
| 2013 | 0.973359 |
| 2012 | 0.970938 |
| 2011 | 0.968607 |
| 2010 | 0.966321 |
| 2009 | 0.964891 |
| 2008 | 0.964551 |
| 2007 | 0.96393 |
| 2006 | 0.961247 |
| 2005 | 0.9568 |
| 2004 | 0.950902 |
| 2003 | 0.943425 |
| 2002 | 0.935272 |
| 2001 | 0.926912 |
| 2000 | 0.91733 |
| 1999 | 0.905039 |
| 1998 | 0.889548 |
| 1997 | 0.871107 |
| 1996 | 0.861784 |
| 1995 | 0.86349 |
| 1994 | 0.865937 |
| 1993 | 0.868999 |
| 1992 | 0.872414 |
| 1991 | 0.875644 |
| 1990 | 0.878557 |
| 1989 | 0.881186 |
| 1988 | 0.883217 |
| 1987 | 0.884321 |
| 1986 | 0.884114 |
| 1985 | 0.882289 |
| 1984 | 0.87874 |
| 1983 | 0.872926 |
| 1982 | 0.8654 |
| 1981 | 0.858334 |
| 1980 | 0.85306 |
| 1979 | 0.849755 |
| 1978 | 0.849527 |
| 1977 | 0.851501 |
| 1976 | 0.85257 |
| 1975 | 0.850755 |
| 1974 | 0.846188 |
| 1973 | 0.838866 |
| 1972 | 0.82871 |
| 1971 | 0.818347 |
| 1970 | 0.810124 |
| 1969 | 0.80366 |
| 1968 | 0.798814 |
| 1967 | 0.795444 |
| 1966 | 0.791365 |
| 1965 | 0.784739 |
| 1964 | 0.77562 |
| 1963 | 0.764335 |
| 1962 | 0.750698 |
| 1961 | 0.736716 |
| 1960 | 0.724082 |