Year	Percent
1995-01-01	34.8633158000000
1996-01-01	34.1887739700000
1997-01-01	33.9186711775000
1998-01-01	33.4506674425000
1999-01-01	33.3320060250000
2000-01-01	33.9303522300000
2001-01-01	33.2223541825000
2002-01-01	31.1998238250000
2003-01-01	31.3963100675000
2004-01-01	31.8262868500000
2005-01-01	32.3668687850000
2006-01-01	32.5558845525000
2007-01-01	32.3973250600000
2008-01-01	31.6347530750000
2009-01-01	31.3685164825000
2010-01-01	31.2604908475000
2011-01-01	30.0493154050000
2012-01-01	49.5000000000000
2013-01-01	49.6083333333333
2014-01-01	49.7250000000000
2015-01-01	48.9666666666667
2016-01-01	48.4833333333333
2017-01-01	48.2916666666667