Year	Number
2004-01-01	2645473
2005-01-01	2819012
2006-01-01	3035792
2007-01-01	3173142
2008-01-01	3321657
2009-01-01	3444821
2010-01-01	2830285
2011-01-01	2922802
2012-01-01	3023650
2013-01-01	2926427
2014-01-01	2969458
2015-01-01	3036069
2016-01-01	3241534