Year Youngest child under 18 years Youngest child between 6 to 17 years Youngest child under 6 years Youngest child under 3 years
1975 47.4 54.9 39 34.3
1976 48.8 56.2 40.1 34.1
1977 50.8 58.3 41.2 35.4
1978 53 60 44 39.4
1979 54.5 61.6 45.7 41.1
1980 56.6 64.3 46.8 41.9
1981 58.1 65.5 48.9 44.3
1982 58.5 65.8 49.9 45.6
1983 58.9 66.3 50.5 46
1984 60.5 68.1 52.1 47.6
1985 62.1 69.9 53.5 49.5
1986 62.8 70.4 54.4 50.8
1987 64.7 72 56.7 52.9
1988 65.1 73.3 56.1 52.4
1989 65.7 74.2 56.7 52.4
1990 66.7 74.7 58.2 53.6
1991 66.6 74.4 58.4 54.5
1992 67.2 75.9 58 54.5
1993 66.9 75.4 57.9 53.9
1994 68.4 76 60.3 57.1
1995 69.7 76.4 62.3 58.7
1996 70.2 77.2 62.3 59
1997 72.1 78.1 65 61.8
1998 72.3 78.4 65.2 62.2
1999 72.1 78.5 64.4 60.7
2000 72.9 79 65.3 61
2001 72.7 79.4 64.4 60.7
2002 72.2 78.6 64.1 60.5
2003 71.7 78.7 62.9 58.7
2004 70.7 77.5 62.2 57.3
2005 70.5 76.9 62.6 58.9
2006 70.6 76.9 63 59.9
2007 71.3 77.7 63.5 60.1
2008 71.2 77.5 63.6 59.6
2009 71.6 78.2 63.6 61.1
2010 71.3 77.2 64.2 61.1
2011 70.9 76.5 64.2 60.9
2012 70.9 76 64.7 60.7
2013 70.3 74.8 64.7 62.1
2014 70.8 75.8 64.3 61.8
2015 69.9 74.6 63.9 61.4
2016 70.8 75 65.3 63.1