Year	Number
2007-01-01	369670
2008-01-01	396004
2009-01-01	481989
2010-01-01	764557
2011-01-01	1230360
2012-01-01	1687431
2013-01-01	2038027
2014-01-01	2301677
2015-01-01	2491104
2016-01-01	2630103
2017-01-01	2843424