Year	Percent
2005-01-01	18.6097190002257
2006-01-01	18.9569455723317
2007-01-01	19.6393263905468
2008-01-01	20.2387429998293
2009-01-01	19.8388145379073
2010-01-01	23.8167522342416
2011-01-01	25.2675639215700
2012-01-01	25.5580321137426
2013-01-01	25.1210831901299
2014-01-01	24.5321622728564
2015-01-01	24.4276742385863
2016-01-01	24.0883943273310
2017-01-01	24.2846941395291