Year	Percent
2000-01-01	27.075
2001-01-01	26.200
2002-01-01	26.275
2003-01-01	27.050
2004-01-01	28.425
2005-01-01	28.975
2006-01-01	29.225
2007-01-01	27.250
2008-01-01	26.825
2009-01-01	27.200
2010-01-01	30.975
2011-01-01	31.900
2012-01-01	30.775
2013-01-01	30.800
2014-01-01	32.625
2015-01-01	31.525
2016-01-01	31.800
2017-01-01	31.650