| 年份 | 斯里兰卡 |
|---|---|
| 2023 | - |
| 2022 | -0.092019 |
| 2021 | 0.894441 |
| 2020 | 0.373289 |
| 2019 | 0.47808 |
| 2018 | 0.643122 |
| 2017 | 0.289417 |
| 2016 | 0.348 |
| 2015 | 0.410307 |
| 2014 | 0.483919 |
| 2013 | 0.541385 |
| 2012 | 0.77009 |
| 2011 | 0.939096 |
| 2010 | 0.923948 |
| 2009 | 0.983987 |
| 2008 | 1.04396 |
| 2007 | 1.06065 |
| 2006 | 1.0139 |
| 2005 | 0.956337 |
| 2004 | 0.983744 |
| 2003 | 1.02048 |
| 2002 | 1.02106 |
| 2001 | 0.781861 |
| 2000 | 0.585531 |
| 1999 | 0.60721 |
| 1998 | 0.623099 |
| 1997 | 0.707062 |
| 1996 | 0.813777 |
| 1995 | 0.934849 |
| 1994 | 1.0584 |
| 1993 | 1.15328 |
| 1992 | 1.20603 |
| 1991 | 1.24603 |
| 1990 | 1.2685 |
| 1989 | 1.30286 |
| 1988 | 1.37976 |
| 1987 | 1.4129 |
| 1986 | 1.41218 |
| 1985 | 1.39469 |
| 1984 | 1.37671 |
| 1983 | 1.43261 |
| 1982 | 1.58533 |
| 1981 | 1.609 |
| 1980 | 1.65091 |
| 1979 | 1.69927 |
| 1978 | 1.66532 |
| 1977 | 1.64985 |
| 1976 | 1.67041 |
| 1975 | 1.68321 |
| 1974 | 1.74774 |
| 1973 | 1.8357 |
| 1972 | 1.9119 |
| 1971 | 2.00323 |
| 1970 | 2.08101 |
| 1969 | 2.15454 |
| 1968 | 2.23706 |
| 1967 | 2.25524 |
| 1966 | 2.25148 |
| 1965 | 2.2791 |
| 1964 | 2.29201 |
| 1963 | 2.21421 |
| 1962 | 2.2138 |
| 1961 | 2.22076 |
| 1960 | - |