Year	Number
2004-01-01	315794
2005-01-01	558451
2006-01-01	373604
2007-01-01	413118
2008-01-01	476775
2009-01-01	509482
2010-01-01	589005
2011-01-01	678966
2012-01-01	857333
2013-01-01	930183
2014-01-01	1095011
2015-01-01	1233114