Year	Number
2004-01-01	717816
2005-01-01	809382
2006-01-01	841526
2007-01-01	1494142
2008-01-01	1681787
2009-01-01	1740263
2010-01-01	1759542
2011-01-01	1744657
2012-01-01	1822106
2013-01-01	1915586
2014-01-01	2013224
2015-01-01	2136937
2016-01-01	2298425
2017-01-01	2563221