Year	Percent
1996-01-01	28.982400000000000
1997-01-01	33.698400000000000
1998-01-01	34.031100000000000
1999-01-01	29.353400000000000
2000-01-01	30.679100000000000
2001-01-01	35.091800000000000
2002-01-01	33.331200000000000
2003-01-01	32.425000000000000
2004-01-01	23.471999999999998
2005-01-01	23.127700000000000
2006-01-01	66.175000000000000
2007-01-01	76.228200000000000
2008-01-01	83.288100000000000
2009-01-01	45.188100000000000
2010-01-01	40.211200000000000
2011-01-01	46.158600000000000
2012-01-01	44.539300000000000
2013-01-01	45.175100000000000
2014-01-01	39.390900000000000
2015-01-01	39.306000000000000
2016-01-01	37.230700000000000