Year	Number
2006-01-01	426487
2007-01-01	496988
2008-01-01	592115
2009-01-01	697232
2010-01-01	759073
2011-01-01	1182116
2012-01-01	1187299
2013-01-01	1558949
2014-01-01	1818298
2015-01-01	2522577
2016-01-01	2960398