Year	Percent
2005-01-01	42.2650175738036
2006-01-01	43.3359133710337
2007-01-01	44.3582430756926
2008-01-01	46.5964006267596
2009-01-01	47.3551675903929
2010-01-01	51.7847019979896
2011-01-01	53.9427195914410
2012-01-01	54.6495190716418
2013-01-01	54.8823190288002
2014-01-01	55.6558603226226
2015-01-01	55.8225289972239
2016-01-01	56.1244735555020
2017-01-01	57.0732550560538