Year	Number
2004-01-01	180360
2005-01-01	197224
2006-01-01	283865
2007-01-01	301236
2008-01-01	339260
2009-01-01	546788
2010-01-01	590071
2011-01-01	671344
2012-01-01	788857
2013-01-01	652032
2014-01-01	654090
2015-01-01	678859
2016-01-01	613789