Year	Number
2004-01-01	32216
2005-01-01	55735
2006-01-01	43693
2007-01-01	50829
2008-01-01	59629
2009-01-01	68633
2010-01-01	66608
2011-01-01	48990
2012-01-01	46812
2013-01-01	39998
2014-01-01	46488
2015-01-01	39212
2016-01-01	41459