Year	Number
2004-01-01	228.7394
2005-01-01	366.0200
2006-01-01	483.1530
2007-01-01	544.9352
2008-01-01	677.3909
2009-01-01	726.1063
2010-01-01	798.1636
2011-01-01	907.3349
2012-01-01	1211.4105
2013-01-01	1240.7832
2014-01-01	1533.2406
2015-01-01	1588.7687
2016-01-01	1798.3618