Year	Number
2005-01-01	41.2259
2006-01-01	47.1944
2007-01-01	53.5204
2008-01-01	59.7212
2009-01-01	64.3495
2010-01-01	67.7984
2011-01-01	71.0329
2012-01-01	72.9628
2013-01-01	73.6776
2014-01-01	75.4467
2015-01-01	78.9492
2016-01-01	81.3259