Year	Number
2004-01-01	402904
2005-01-01	411431
2006-01-01	414176
2007-01-01	475634
2008-01-01	546148
2009-01-01	644903
2010-01-01	659431
2011-01-01	628372
2012-01-01	786279
2013-01-01	867180
2014-01-01	912646
2015-01-01	917416
2016-01-01	897251