Year	Number
2006-01-01	612514
2007-01-01	711013
2008-01-01	889812
2009-01-01	1046582
2010-01-01	1177046
2011-01-01	1723764
2012-01-01	1824398
2013-01-01	2349429
2014-01-01	2697838
2015-01-01	3576907
2016-01-01	4064899