Year	Number
2007-01-01	14.0251
2008-01-01	16.0850
2009-01-01	18.2155
2010-01-01	21.0358
2011-01-01	21.0277
2012-01-01	52.5991
2013-01-01	60.3289
2014-01-01	65.7664
2015-01-01	74.6341
2016-01-01	84.3835
2017-01-01	93.5185