Year	Percent
1996-01-01	22.810100000000000
1997-01-01	15.575600000000000
1998-01-01	16.378200000000000
1999-01-01	18.737700000000000
2000-01-01	19.695999999999998
2001-01-01	28.301200000000000
2002-01-01	11.864300000000000
2003-01-01	14.081700000000000
2004-01-01	31.167800000000000
2005-01-01	13.859200000000000
2006-01-01	18.716300000000000
2007-01-01	22.929400000000000
2008-01-01	14.926300000000000
2009-01-01	15.053300000000000
2010-01-01	7.101990000000000
2011-01-01	11.069400000000000
2012-01-01	10.343900000000000
2013-01-01	17.296800000000000
2014-01-01	12.095800000000000
2015-01-01	14.439700000000000
2016-01-01	14.112200000000000