Year	Number
2004-01-01	310500
2005-01-01	326499
2006-01-01	432280
2007-01-01	461509
2008-01-01	833967
2009-01-01	956127
2010-01-01	1011102
2011-01-01	1114784
2012-01-01	1059551
2013-01-01	1206646
2014-01-01	1529458
2015-01-01	1782220
2016-01-01	1991765