| 年份 | 斯里兰卡 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 6.1 |
| 2020 | 6.3 |
| 2019 | 6.5 |
| 2018 | 6.8 |
| 2017 | 7.1 |
| 2016 | 7.4 |
| 2015 | 7.8 |
| 2014 | 8.3 |
| 2013 | 8.8 |
| 2012 | 9.3 |
| 2011 | 9.7 |
| 2010 | 10.1 |
| 2009 | 19.8 |
| 2008 | 10.8 |
| 2007 | 11.4 |
| 2006 | 12.1 |
| 2005 | 12.9 |
| 2004 | 27.5 |
| 2003 | 13.8 |
| 2002 | 14.1 |
| 2001 | 14.5 |
| 2000 | 15.1 |
| 1999 | 15.8 |
| 1998 | 16.4 |
| 1997 | 17 |
| 1996 | 17.6 |
| 1995 | 18.2 |
| 1994 | 18.9 |
| 1993 | 19.4 |
| 1992 | 19.9 |
| 1991 | 20.3 |
| 1990 | 20.8 |
| 1989 | 25.1 |
| 1988 | 21.9 |
| 1987 | 23.2 |
| 1986 | 25.3 |
| 1985 | 27.9 |
| 1984 | 30.9 |
| 1983 | 34.2 |
| 1982 | 37 |
| 1981 | 40 |
| 1980 | 43 |
| 1979 | 46.5 |
| 1978 | 50.3 |
| 1977 | 54 |
| 1976 | 57.4 |
| 1975 | 60.1 |
| 1974 | 62.1 |
| 1973 | 63.5 |
| 1972 | 64.5 |
| 1971 | 65.2 |
| 1970 | 66.1 |
| 1969 | 67.3 |
| 1968 | 69.1 |
| 1967 | 71.4 |
| 1966 | 74.3 |
| 1965 | 77.1 |
| 1964 | 79.1 |
| 1963 | 81.2 |
| 1962 | 83.7 |
| 1961 | 86.7 |
| 1960 | 90.6 |