Year	Percent
2005-01-01	32.725
2006-01-01	33.100
2007-01-01	34.325
2008-01-01	34.450
2009-01-01	32.700
2010-01-01	31.275
2011-01-01	30.975
2012-01-01	29.750
2013-01-01	29.250
2014-01-01	28.800
2015-01-01	29.200
2016-01-01	29.700
2017-01-01	30.600