From: Evidence-based campaigning
Year
Percentage of children
1999
0.23
2000
0.41
2001
0.55
2002
0.67
2003
0.77
2004
0.86
2005
0.94
2006
1.03
2007
1.10
2008
1.20
2009
1.30
2010
1.36
2011
1.41
2012
1.46
2013
1.61
2014
1.77
2015
1.34