Year	Number
2004-01-01	401768
2005-01-01	488206
2006-01-01	570595
2007-01-01	650730
2008-01-01	763089
2009-01-01	822579
2010-01-01	911081
2011-01-01	1024626
2012-01-01	1108186
2013-01-01	1261896
2014-01-01	1309250
2015-01-01	1480416
2016-01-01	1610390