Year	Number
2004-01-01	0.0000
2005-01-01	0.0000
2006-01-01	0.0366
2007-01-01	0.0842
2008-01-01	0.1229
2009-01-01	0.1641
2010-01-01	0.2866
2011-01-01	0.3136
2012-01-01	0.3573
2013-01-01	0.3809
2014-01-01	0.4082
2015-01-01	0.4520