Year	Number
2004-01-01	503090
2005-01-01	853006
2006-01-01	881703
2007-01-01	1104437
2008-01-01	1129053
2009-01-01	1281926
2010-01-01	1446481
2011-01-01	1755742
2012-01-01	2098082
2013-01-01	2504634
2014-01-01	3031743
2015-01-01	3334068
2016-01-01	3672007