Year	Number
2004-01-01	16876
2005-01-01	19243
2006-01-01	29781
2007-01-01	36659
2008-01-01	61652
2009-01-01	62933
2010-01-01	65691
2011-01-01	88256
2012-01-01	92441
2013-01-01	91503
2014-01-01	92733
2015-01-01	77926
2016-01-01	72731
2017-01-01	167515