Year	Percent
2004-01-01	99.465800000000000
2005-01-01	97.528300000000000
2006-01-01	93.148300000000000
2007-01-01	84.772800000000000
2008-01-01	81.321800000000000
2009-01-01	80.786500000000000
2010-01-01	76.133300000000000
2011-01-01	50.023100000000000
2012-01-01	47.796400000000000
2013-01-01	51.971000000000004
2014-01-01	53.805200000000000
2015-01-01	75.118300000000000
2016-01-01	76.008300000000000