| 年份 | 斯里兰卡 |
|---|---|
| 2023 | - |
| 2022 | 2.35223 |
| 2021 | 2.23622 |
| 2020 | 2.16118 |
| 2019 | 2.08023 |
| 2018 | 2.01287 |
| 2017 | 1.93049 |
| 2016 | 1.83731 |
| 2015 | 1.7799 |
| 2014 | 1.72835 |
| 2013 | 1.67629 |
| 2012 | 1.62423 |
| 2011 | 1.6054 |
| 2010 | 1.63466 |
| 2009 | 1.65643 |
| 2008 | 1.66917 |
| 2007 | 1.66687 |
| 2006 | 1.65333 |
| 2005 | 1.6451 |
| 2004 | 1.63596 |
| 2003 | 1.62326 |
| 2002 | 1.60928 |
| 2001 | 1.59547 |
| 2000 | 1.59067 |
| 1999 | 1.57161 |
| 1998 | 1.53173 |
| 1997 | 1.49244 |
| 1996 | 1.45072 |
| 1995 | 1.40563 |
| 1994 | 1.35753 |
| 1993 | 1.3064 |
| 1992 | 1.25318 |
| 1991 | 1.19998 |
| 1990 | 1.14714 |
| 1989 | 1.09587 |
| 1988 | 1.04568 |
| 1987 | 0.996154 |
| 1986 | 0.948613 |
| 1985 | 0.903296 |
| 1984 | 0.859981 |
| 1983 | 0.819009 |
| 1982 | 0.781691 |
| 1981 | 0.748436 |
| 1980 | 0.719677 |
| 1979 | 0.695362 |
| 1978 | 0.676373 |
| 1977 | 0.664142 |
| 1976 | 0.654803 |
| 1975 | 0.645002 |
| 1974 | 0.636056 |
| 1973 | 0.628129 |
| 1972 | 0.621389 |
| 1971 | 0.616204 |
| 1970 | 0.614811 |
| 1969 | 0.621149 |
| 1968 | 0.635318 |
| 1967 | 0.654853 |
| 1966 | 0.67982 |
| 1965 | 0.710948 |
| 1964 | 0.749458 |
| 1963 | 0.795333 |
| 1962 | 0.847 |
| 1961 | 0.903973 |
| 1960 | 0.967815 |