Year	Number
2007-01-01	647122
2008-01-01	1902087
2009-01-01	2496931
2010-01-01	2179416
2011-01-01	1644980
2012-01-01	1423906
2013-01-01	751675
2014-01-01	555259
2015-01-01	388438
2016-01-01	369499
2017-01-01	342407