Year	Number
2004-01-01	177321
2005-01-01	200556
2006-01-01	240553
2007-01-01	220184
2008-01-01	341486
2009-01-01	428161
2010-01-01	510952
2011-01-01	599423
2012-01-01	651482
2013-01-01	755355
2014-01-01	854069
2015-01-01	983228