Year	Percent
2005-01-01	24.4214941688704
2006-01-01	24.2003551699492
2007-01-01	24.7858447481418
2008-01-01	26.2760747149544
2009-01-01	26.2557276024925
2010-01-01	30.4085057380292
2011-01-01	32.0242525509157
2012-01-01	31.6033350819291
2013-01-01	31.0718137685257
2014-01-01	30.5614578248213
2015-01-01	29.8663313285253
2016-01-01	29.2252487473073
2017-01-01	29.8171968573363