Year	Number
2007-01-01	21039
2008-01-01	27382
2009-01-01	35616
2010-01-01	44576
2011-01-01	48591
2012-01-01	87687
2013-01-01	119218
2014-01-01	200188
2015-01-01	143343
2016-01-01	250726