| 年份 | 新加坡 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 2.1 |
| 2020 | 2.2 |
| 2019 | 2.4 |
| 2018 | 2.5 |
| 2017 | 2.6 |
| 2016 | 2.7 |
| 2015 | 2.7 |
| 2014 | 2.7 |
| 2013 | 2.8 |
| 2012 | 2.8 |
| 2011 | 2.8 |
| 2010 | 2.8 |
| 2009 | 2.8 |
| 2008 | 2.8 |
| 2007 | 2.9 |
| 2006 | 2.9 |
| 2005 | 2.9 |
| 2004 | 3 |
| 2003 | 3.2 |
| 2002 | 3.4 |
| 2001 | 3.6 |
| 2000 | 3.9 |
| 1999 | 4.2 |
| 1998 | 4.4 |
| 1997 | 4.6 |
| 1996 | 4.8 |
| 1995 | 5 |
| 1994 | 5.3 |
| 1993 | 5.7 |
| 1992 | 6.3 |
| 1991 | 6.9 |
| 1990 | 7.7 |
| 1989 | 8.5 |
| 1988 | 9.2 |
| 1987 | 9.8 |
| 1986 | 10.3 |
| 1985 | 10.9 |
| 1984 | 11.5 |
| 1983 | 12.2 |
| 1982 | 13.2 |
| 1981 | 14.1 |
| 1980 | 14.8 |
| 1979 | 15.1 |
| 1978 | 15.2 |
| 1977 | 15.2 |
| 1976 | 15.7 |
| 1975 | 17.2 |
| 1974 | 19.6 |
| 1973 | 22.1 |
| 1972 | 24.1 |
| 1971 | 25.7 |
| 1970 | 27.1 |
| 1969 | 28.4 |
| 1968 | 30 |
| 1967 | 31.8 |
| 1966 | 33.6 |
| 1965 | 35.1 |
| 1964 | 36.4 |
| 1963 | 38 |
| 1962 | 40.4 |
| 1961 | 43.7 |
| 1960 | 47.7 |