Year	Percent
2002-01-01	49.900200000000000
2003-01-01	42.107200000000000
2004-01-01	34.344400000000000
2005-01-01	30.425400000000000
2006-01-01	25.807200000000000
2007-01-01	24.089600000000000
2008-01-01	25.958600000000000
2009-01-01	31.004100000000000
2010-01-01	34.336999999999996
2011-01-01	36.207300000000000
2012-01-01	38.932100000000000
2013-01-01	39.281800000000000
2014-01-01	34.780100000000000
2015-01-01	34.307500000000000
2016-01-01	33.473700000000000
2017-01-01	32.464000000000000