Year	Number
2007-01-01	1407035
2008-01-01	2675745
2009-01-01	3258209
2010-01-01	4482180
2011-01-01	5610000
2012-01-01	6452000
2013-01-01	6512607
2014-01-01	6610030
2015-01-01	8019962
2016-01-01	7210091