| 年份 | 新加坡 |
|---|---|
| 2023 | - |
| 2022 | 15.1173 |
| 2021 | 14.126 |
| 2020 | 13.1542 |
| 2019 | 12.1956 |
| 2018 | 11.263 |
| 2017 | 10.3758 |
| 2016 | 9.56497 |
| 2015 | 8.92256 |
| 2014 | 8.50861 |
| 2013 | 8.19735 |
| 2012 | 7.87188 |
| 2011 | 7.52104 |
| 2010 | 7.20137 |
| 2009 | 7.02315 |
| 2008 | 6.98118 |
| 2007 | 6.98649 |
| 2006 | 7.00076 |
| 2005 | 6.9989 |
| 2004 | 6.95745 |
| 2003 | 6.86283 |
| 2002 | 6.70582 |
| 2001 | 6.50722 |
| 2000 | 6.31769 |
| 1999 | 6.17779 |
| 1998 | 6.07997 |
| 1997 | 5.99934 |
| 1996 | 5.92697 |
| 1995 | 5.85035 |
| 1994 | 5.77153 |
| 1993 | 5.70883 |
| 1992 | 5.6629 |
| 1991 | 5.62778 |
| 1990 | 5.59227 |
| 1989 | 5.53995 |
| 1988 | 5.47982 |
| 1987 | 5.42165 |
| 1986 | 5.36219 |
| 1985 | 5.29858 |
| 1984 | 5.22569 |
| 1983 | 5.14143 |
| 1982 | 5.04954 |
| 1981 | 4.95739 |
| 1980 | 4.85673 |
| 1979 | 4.7319 |
| 1978 | 4.57514 |
| 1977 | 4.39759 |
| 1976 | 4.21455 |
| 1975 | 4.03046 |
| 1974 | 3.85798 |
| 1973 | 3.7 |
| 1972 | 3.55847 |
| 1971 | 3.43459 |
| 1970 | 3.32033 |
| 1969 | 3.15429 |
| 1968 | 2.92617 |
| 1967 | 2.70492 |
| 1966 | 2.5024 |
| 1965 | 2.31548 |
| 1964 | 2.1444 |
| 1963 | 1.98449 |
| 1962 | 1.84027 |
| 1961 | 1.72091 |
| 1960 | 1.62775 |