| 年份 | 斯里兰卡 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 6.7 |
| 2020 | 7 |
| 2019 | 7.3 |
| 2018 | 7.6 |
| 2017 | 7.9 |
| 2016 | 8.3 |
| 2015 | 8.8 |
| 2014 | 9.3 |
| 2013 | 9.9 |
| 2012 | 10.4 |
| 2011 | 10.8 |
| 2010 | 11.2 |
| 2009 | 20.9 |
| 2008 | 12 |
| 2007 | 12.6 |
| 2006 | 13.4 |
| 2005 | 14.1 |
| 2004 | 28.9 |
| 2003 | 15.1 |
| 2002 | 15.6 |
| 2001 | 16 |
| 2000 | 16.5 |
| 1999 | 17.1 |
| 1998 | 17.8 |
| 1997 | 18.5 |
| 1996 | 19.2 |
| 1995 | 19.9 |
| 1994 | 20.7 |
| 1993 | 21.4 |
| 1992 | 22 |
| 1991 | 22.5 |
| 1990 | 22.8 |
| 1989 | 27.1 |
| 1988 | 23.8 |
| 1987 | 25.2 |
| 1986 | 27.4 |
| 1985 | 30.2 |
| 1984 | 33.4 |
| 1983 | 36.8 |
| 1982 | 40 |
| 1981 | 43 |
| 1980 | 46.2 |
| 1979 | 49.9 |
| 1978 | 53.8 |
| 1977 | 57.7 |
| 1976 | 61.1 |
| 1975 | 64 |
| 1974 | 66.1 |
| 1973 | 67.5 |
| 1972 | 68.5 |
| 1971 | 69.3 |
| 1970 | 70.1 |
| 1969 | 71.4 |
| 1968 | 73.1 |
| 1967 | 75.5 |
| 1966 | 78.2 |
| 1965 | 80.8 |
| 1964 | 82.9 |
| 1963 | 84.8 |
| 1962 | 86.9 |
| 1961 | 89.7 |
| 1960 | 93.9 |