The source for 1970, 1980, 1990 is from Stella Quah (1994) p.61. For 2000 and 2009 the statistics come from Ministry of Manpower Labour Force Survey 2000 and 2009 (Table 4.4).
From: The Shaping of Childcare and Preschool Education in Singapore: From Separatism to Collaboration
1970 | 1980 | 1990 | 2000 | 2009 |
---|---|---|---|---|
24.6 | 44.3 | 50.3 | 50.2 | 55.2 |