Year	Number
2007-01-01	1747520
2008-01-01	2012742
2009-01-01	2309270
2010-01-01	2679782
2011-01-01	2649928
2012-01-01	5607678
2013-01-01	6464187
2014-01-01	6924809
2015-01-01	7751759
2016-01-01	9164100
2017-01-01	10262113