Year	Number
2004-01-01	162.0792
2005-01-01	191.4305
2006-01-01	195.9803
2007-01-01	199.5746
2008-01-01	205.5078
2009-01-01	209.3243
2010-01-01	262.4335
2011-01-01	297.9798
2012-01-01	316.4600
2013-01-01	427.3537
2014-01-01	455.1604
2015-01-01	487.8498
2016-01-01	525.0184