| 年份 | 斯里兰卡 |
|---|---|
| 2023 | - |
| 2022 | 2.48617 |
| 2021 | 2.35549 |
| 2020 | 2.22374 |
| 2019 | 2.08616 |
| 2018 | 1.96004 |
| 2017 | 1.85338 |
| 2016 | 1.78178 |
| 2015 | 1.73296 |
| 2014 | 1.68584 |
| 2013 | 1.65476 |
| 2012 | 1.6105 |
| 2011 | 1.56606 |
| 2010 | 1.55317 |
| 2009 | 1.54515 |
| 2008 | 1.52847 |
| 2007 | 1.51675 |
| 2006 | 1.51447 |
| 2005 | 1.5198 |
| 2004 | 1.52334 |
| 2003 | 1.52442 |
| 2002 | 1.51856 |
| 2001 | 1.50684 |
| 2000 | 1.4875 |
| 1999 | 1.45147 |
| 1998 | 1.40364 |
| 1997 | 1.35483 |
| 1996 | 1.3089 |
| 1995 | 1.26793 |
| 1994 | 1.23137 |
| 1993 | 1.19927 |
| 1992 | 1.17117 |
| 1991 | 1.14418 |
| 1990 | 1.11615 |
| 1989 | 1.08863 |
| 1988 | 1.06045 |
| 1987 | 1.03037 |
| 1986 | 1.00096 |
| 1985 | 0.972901 |
| 1984 | 0.945564 |
| 1983 | 0.919718 |
| 1982 | 0.896133 |
| 1981 | 0.873155 |
| 1980 | 0.849558 |
| 1979 | 0.825532 |
| 1978 | 0.801003 |
| 1977 | 0.777076 |
| 1976 | 0.755226 |
| 1975 | 0.735939 |
| 1974 | 0.71964 |
| 1973 | 0.707211 |
| 1972 | 0.698283 |
| 1971 | 0.689232 |
| 1970 | 0.67908 |
| 1969 | 0.670411 |
| 1968 | 0.662942 |
| 1967 | 0.655834 |
| 1966 | 0.652753 |
| 1965 | 0.656507 |
| 1964 | 0.667226 |
| 1963 | 0.684892 |
| 1962 | 0.709736 |
| 1961 | 0.741016 |
| 1960 | 0.779068 |