Year	Number
2004-01-01	116.5166
2005-01-01	135.3995
2006-01-01	146.6823
2007-01-01	167.2667
2008-01-01	177.6647
2009-01-01	182.2458
2010-01-01	193.1846
2011-01-01	212.7596
2012-01-01	212.9522
2013-01-01	227.2902
2014-01-01	242.5907
2015-01-01	250.0141
2016-01-01	252.4795
2017-01-01	265.7333