Year	Number
2004-01-01	584.4249
2005-01-01	576.3322
2006-01-01	577.2538
2007-01-01	586.3354
2008-01-01	660.2863
2009-01-01	722.6332
2010-01-01	752.9638
2011-01-01	836.3691
2012-01-01	875.1605
2013-01-01	1008.5745
2014-01-01	1215.7005
2015-01-01	1387.9928
2016-01-01	1565.5275