Year	Percent
2000-01-01	48.7679460312056
2001-01-01	49.3545977955891
2002-01-01	49.8596042896577
2003-01-01	49.0626606900875
2004-01-01	50.1389450033153
2005-01-01	50.2656996283686
2006-01-01	50.5006625540605
2007-01-01	50.4551570480394
2008-01-01	50.1952901539824
2009-01-01	49.2994907577548
2010-01-01	49.5754143082033
2011-01-01	49.8109472619764
2012-01-01	50.1189776237623
2013-01-01	50.3438056592658
2014-01-01	51.4910001457817
2015-01-01	51.8915041987884
2016-01-01	52.1619255404048
2017-01-01	52.6551999762106