Year	Number
2004-01-01	177.3766
2005-01-01	307.6876
2006-01-01	384.1359
2007-01-01	428.4167
2008-01-01	481.0147
2009-01-01	532.0811
2010-01-01	609.5497
2011-01-01	706.5167
2012-01-01	944.9028
2013-01-01	960.7678
2014-01-01	1141.3777
2015-01-01	1200.0713
2016-01-01	1352.1367