Year	Number
2007-01-01	521721
2008-01-01	1670042
2009-01-01	2111539
2010-01-01	1765530
2011-01-01	1305529
2012-01-01	1120732
2013-01-01	577328
2014-01-01	416509
2015-01-01	292843
2016-01-01	287138
2017-01-01	268152