Year	Number
2007-01-01	655662
2008-01-01	1908059
2009-01-01	2503282
2010-01-01	2184862
2011-01-01	1651146
2012-01-01	1459035
2013-01-01	792579
2014-01-01	644507
2015-01-01	491286
2016-01-01	633213
2017-01-01	620197