Year	Number
2004-01-01	360805
2005-01-01	387732
2006-01-01	587147
2007-01-01	513191
2008-01-01	671824
2009-01-01	663929
2010-01-01	769711
2011-01-01	1010518
2012-01-01	1288928
2013-01-01	1234533
2014-01-01	1286441
2015-01-01	1251267
2016-01-01	1339486