Year	Number
2004-01-01	162.0970
2005-01-01	164.9934
2006-01-01	214.2369
2007-01-01	236.5508
2008-01-01	237.7680
2009-01-01	233.2522
2010-01-01	258.6601
2011-01-01	284.3945
2012-01-01	301.2155
2013-01-01	317.4615
2014-01-01	342.6275
2015-01-01	365.7770
2016-01-01	380.0973