Year	Number
2004-01-01	384886
2005-01-01	436866
2006-01-01	289631
2007-01-01	327958
2008-01-01	331371
2009-01-01	324655
2010-01-01	331698
2011-01-01	373321
2012-01-01	377026
2013-01-01	393138
2014-01-01	423660
2015-01-01	466522
2016-01-01	458886