Year	Number
2004-01-01	3841
2005-01-01	4971
2006-01-01	6773
2007-01-01	9703
2008-01-01	10004
2009-01-01	13516
2010-01-01	17755
2011-01-01	24319
2012-01-01	8498
2013-01-01	41606
2014-01-01	86904
2015-01-01	105799
2016-01-01	81926