Year	Number
2004-01-01	302920
2005-01-01	496752
2006-01-01	567560
2007-01-01	564738
2008-01-01	580175
2009-01-01	425468
2010-01-01	347698
2011-01-01	254775
2012-01-01	254528
2013-01-01	238955
2014-01-01	195218
2015-01-01	169028
2016-01-01	153280
2017-01-01	137195