Year	Number
2004-01-01	292433
2005-01-01	313773
2006-01-01	466157
2007-01-01	454589
2008-01-01	592373
2009-01-01	594784
2010-01-01	655355
2011-01-01	901584
2012-01-01	1101688
2013-01-01	1104057
2014-01-01	1151973
2015-01-01	1157121