| 年份 | 斯里兰卡 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 5.2 |
| 2020 | 5.4 |
| 2019 | 5.6 |
| 2018 | 5.8 |
| 2017 | 6 |
| 2016 | 6.3 |
| 2015 | 6.7 |
| 2014 | 7.1 |
| 2013 | 7.5 |
| 2012 | 7.9 |
| 2011 | 8.3 |
| 2010 | 8.7 |
| 2009 | 12.6 |
| 2008 | 9.2 |
| 2007 | 9.7 |
| 2006 | 10.4 |
| 2005 | 11 |
| 2004 | 16.4 |
| 2003 | 11.7 |
| 2002 | 12 |
| 2001 | 12.4 |
| 2000 | 12.8 |
| 1999 | 13.4 |
| 1998 | 13.9 |
| 1997 | 14.4 |
| 1996 | 14.9 |
| 1995 | 15.4 |
| 1994 | 15.8 |
| 1993 | 16.3 |
| 1992 | 16.6 |
| 1991 | 17 |
| 1990 | 17.3 |
| 1989 | 19.2 |
| 1988 | 18.3 |
| 1987 | 19.3 |
| 1986 | 20.9 |
| 1985 | 22.9 |
| 1984 | 25.1 |
| 1983 | 27.5 |
| 1982 | 29.3 |
| 1981 | 31.4 |
| 1980 | 33.4 |
| 1979 | 35.7 |
| 1978 | 38.2 |
| 1977 | 40.7 |
| 1976 | 42.7 |
| 1975 | 44.4 |
| 1974 | 45.6 |
| 1973 | 46.4 |
| 1972 | 46.9 |
| 1971 | 47.4 |
| 1970 | 47.9 |
| 1969 | 48.6 |
| 1968 | 49.6 |
| 1967 | 50.8 |
| 1966 | 52.6 |
| 1965 | 54.3 |
| 1964 | 55.4 |
| 1963 | 56.6 |
| 1962 | 58.3 |
| 1961 | 60 |
| 1960 | 62.2 |