Year	Number
2004-01-01	54.4129
2005-01-01	54.6379
2006-01-01	65.2060
2007-01-01	87.0788
2008-01-01	113.6320
2009-01-01	131.0363
2010-01-01	139.3495
2011-01-01	153.2958
2012-01-01	175.5581
2013-01-01	213.8443
2014-01-01	219.4880
2015-01-01	246.8057
2016-01-01	282.3213