| 年份 | 斯里兰卡 |
|---|---|
| 2023 | - |
| 2022 | 0.112773 |
| 2021 | 1.07545 |
| 2020 | 0.530627 |
| 2019 | 0.611876 |
| 2018 | 0.755905 |
| 2017 | 0.378825 |
| 2016 | 0.415307 |
| 2015 | 0.456782 |
| 2014 | 0.50837 |
| 2013 | 0.54383 |
| 2012 | 0.75175 |
| 2011 | 0.920757 |
| 2010 | 0.904382 |
| 2009 | 0.965635 |
| 2008 | 1.02561 |
| 2007 | 1.04107 |
| 2006 | 0.995543 |
| 2005 | 0.936753 |
| 2004 | 0.965378 |
| 2003 | 1.00211 |
| 2002 | 1.00147 |
| 2001 | 0.763488 |
| 2000 | 0.565925 |
| 1999 | 0.588825 |
| 1998 | 0.603489 |
| 1997 | 0.68867 |
| 1996 | 0.794161 |
| 1995 | 0.916454 |
| 1994 | 1.03877 |
| 1993 | 1.13487 |
| 1992 | 1.1864 |
| 1991 | 1.22762 |
| 1990 | 1.24886 |
| 1989 | 1.28444 |
| 1988 | 1.36011 |
| 1987 | 1.39447 |
| 1986 | 1.39252 |
| 1985 | 1.37504 |
| 1984 | 1.35827 |
| 1983 | 1.41294 |
| 1982 | 1.56565 |
| 1981 | 1.69381 |
| 1980 | 1.77737 |
| 1979 | 1.82558 |
| 1978 | 1.79024 |
| 1977 | 1.77339 |
| 1976 | 1.79381 |
| 1975 | 1.80645 |
| 1974 | 1.86961 |
| 1973 | 1.95742 |
| 1972 | 2.03226 |
| 1971 | 2.12345 |
| 1970 | 2.19988 |
| 1969 | 2.27325 |
| 1968 | 2.35564 |
| 1967 | 2.37246 |
| 1966 | 2.36857 |
| 1965 | 2.39485 |
| 1964 | 2.41003 |
| 1963 | 2.41021 |
| 1962 | 2.40701 |
| 1961 | 2.41361 |
| 1960 | - |