Year	Percent
2005-01-01	26.8401670091362
2006-01-01	26.6722982797032
2007-01-01	27.4555927417486
2008-01-01	28.5955851617364
2009-01-01	28.6977981360015
2010-01-01	32.0762485878136
2011-01-01	34.0259533306138
2012-01-01	34.6500070629642
2013-01-01	35.2766710150320
2014-01-01	35.9440552794883
2015-01-01	35.9839673047838
2016-01-01	35.9136872689680
2017-01-01	36.3632115109300