Year	Number
2007-01-01	6102100
2008-01-01	8330032
2009-01-01	13074833
2010-01-01	16486960
2011-01-01	20903578
2012-01-01	102225776
2013-01-01	108940569
2014-01-01	110119105
2015-01-01	111392670
2016-01-01	156298047
2017-01-01	177247484