Year	Number
2009-01-01	24.0790
2010-01-01	51.0396
2011-01-01	272.8591
2012-01-01	1587.3442
2013-01-01	13530.3117
2014-01-01	19801.6581
2015-01-01	24712.0939
2016-01-01	31538.2284