Year	Number
2004-01-01	178.4762
2005-01-01	198.6574
2006-01-01	226.5234
2007-01-01	250.8211
2008-01-01	259.3797
2009-01-01	265.2883
2010-01-01	281.0278
2011-01-01	311.8918
2012-01-01	353.6932
2013-01-01	385.1092
2014-01-01	413.7478
2015-01-01	426.3229
2016-01-01	429.1783