Year	Percent
1996-01-01	19.655000000000000
1997-01-01	30.569600000000000
1998-01-01	22.295400000000000
1999-01-01	14.219700000000000
2000-01-01	11.823000000000000
2001-01-01	20.721700000000000
2002-01-01	9.278410000000001
2003-01-01	27.341800000000000
2004-01-01	10.401800000000000
2005-01-01	14.097900000000000
2006-01-01	23.386700000000000
2007-01-01	24.421000000000000
2008-01-01	22.893200000000000
2009-01-01	18.603800000000000
2010-01-01	18.674500000000000
2011-01-01	24.125100000000000
2012-01-01	21.779400000000000
2013-01-01	22.405900000000000
2014-01-01	20.892200000000000
2015-01-01	21.874300000000000
2016-01-01	34.290500000000000