Year	Number
2004-01-01	361133
2005-01-01	397141
2006-01-01	428447
2007-01-01	454952
2008-01-01	495181
2009-01-01	541028
2010-01-01	587804
2011-01-01	588576
2012-01-01	661500
2013-01-01	736654
2014-01-01	804094
2015-01-01	865192
2016-01-01	1023551
2017-01-01	1116880