Year	Number
2004-01-01	142906
2005-01-01	173984
2006-01-01	226236
2007-01-01	244653
2008-01-01	233722
2009-01-01	291637
2010-01-01	261696
2011-01-01	341013
2012-01-01	325462
2013-01-01	338000
2014-01-01	364333
2015-01-01	413654
2016-01-01	564808
2017-01-01	584910