Year	Number
2004-01-01	379.1611
2005-01-01	417.4641
2006-01-01	430.3962
2007-01-01	440.1235
2008-01-01	467.5463
2009-01-01	475.8876
2010-01-01	532.2195
2011-01-01	614.7986
2012-01-01	640.2670
2013-01-01	621.0303
2014-01-01	615.2663
2015-01-01	582.5782
2016-01-01	573.6389
2017-01-01	662.1993