Year	Number
2004-01-01	192343
2005-01-01	211672
2006-01-01	119693
2007-01-01	261277
2008-01-01	320008
2009-01-01	331421
2010-01-01	350164
2011-01-01	372314
2012-01-01	398867
2013-01-01	428703
2014-01-01	464702
2015-01-01	507280
2016-01-01	571716