Year	Number
2004-01-01	18.4863
2005-01-01	20.0263
2006-01-01	21.7924
2007-01-01	26.3902
2008-01-01	36.8533
2009-01-01	39.6536
2010-01-01	106.3227
2011-01-01	52.2615
2012-01-01	53.9008
2013-01-01	59.3231
2014-01-01	60.1234
2015-01-01	73.3900
2016-01-01	72.2204
2017-01-01	82.3713