Year	Number
2007-01-01	632.6171
2008-01-01	567.3962
2009-01-01	509.5314
2010-01-01	508.4532
2011-01-01	495.7563
2012-01-01	514.6758
2013-01-01	546.9438
2014-01-01	570.8754
2015-01-01	598.3341
2016-01-01	618.1995
2017-01-01	641.1642