| 年份 | 斯里兰卡 |
|---|---|
| 2023 | - |
| 2022 | 1.16087 |
| 2021 | 1.1141 |
| 2020 | 1.0905 |
| 2019 | 1.07016 |
| 2018 | 1.05733 |
| 2017 | 1.04204 |
| 2016 | 1.02671 |
| 2015 | 1.03483 |
| 2014 | 1.05365 |
| 2013 | 1.07617 |
| 2012 | 1.09933 |
| 2011 | 1.10662 |
| 2010 | 1.10715 |
| 2009 | 1.10861 |
| 2008 | 1.10982 |
| 2007 | 1.10611 |
| 2006 | 1.1002 |
| 2005 | 1.10002 |
| 2004 | 1.10304 |
| 2003 | 1.10733 |
| 2002 | 1.11273 |
| 2001 | 1.11874 |
| 2000 | 1.13053 |
| 1999 | 1.13155 |
| 1998 | 1.11913 |
| 1997 | 1.1079 |
| 1996 | 1.09249 |
| 1995 | 1.07187 |
| 1994 | 1.04628 |
| 1993 | 1.01485 |
| 1992 | 0.980048 |
| 1991 | 0.947147 |
| 1990 | 0.916251 |
| 1989 | 0.886492 |
| 1988 | 0.857717 |
| 1987 | 0.828636 |
| 1986 | 0.797374 |
| 1985 | 0.764602 |
| 1984 | 0.732488 |
| 1983 | 0.702185 |
| 1982 | 0.675553 |
| 1981 | 0.653948 |
| 1980 | 0.637881 |
| 1979 | 0.626633 |
| 1978 | 0.618484 |
| 1977 | 0.615243 |
| 1976 | 0.615755 |
| 1975 | 0.616483 |
| 1974 | 0.618267 |
| 1973 | 0.620832 |
| 1972 | 0.624362 |
| 1971 | 0.627575 |
| 1970 | 0.635845 |
| 1969 | 0.658224 |
| 1968 | 0.691492 |
| 1967 | 0.730559 |
| 1966 | 0.774633 |
| 1965 | 0.823649 |
| 1964 | 0.878861 |
| 1963 | 0.940351 |
| 1962 | 1.00642 |
| 1961 | 1.07643 |
| 1960 | 1.15128 |