Year	Percent
2003-01-01	21.200
2004-01-01	22.600
2005-01-01	25.100
2006-01-01	28.500
2007-01-01	29.125
2008-01-01	30.275
2009-01-01	30.600
2010-01-01	31.975
2011-01-01	32.100
2012-01-01	35.225
2013-01-01	34.200
2014-01-01	36.525
2015-01-01	35.025
2016-01-01	33.875
2017-01-01	35.100