Year	Number
2007-01-01	254.6107
2008-01-01	2838.5912
2009-01-01	8502.4131
2010-01-01	13252.8944
2011-01-01	17878.1319
2012-01-01	22980.6078
2013-01-01	28280.2246
2014-01-01	34004.6084
2015-01-01	40213.5680
2016-01-01	53272.6709