Year	Percent
1996-01-01	1.6050300000000000
1997-01-01	1.9117300000000000
1998-01-01	4.1353800000000005
1999-01-01	3.7616000000000000
2000-01-01	3.6232500000000000
2001-01-01	3.4439599999999997
2002-01-01	5.7274300000000000
2003-01-01	8.7752900000000000
2004-01-01	5.3280600000000000
2005-01-01	5.4203500000000000
2006-01-01	4.9897199999999990
2007-01-01	4.5009800000000000
2008-01-01	4.2413000000000000
2009-01-01	3.8912199999999997
2010-01-01	3.9861699999999995
2011-01-01	3.7634700000000000
2012-01-01	3.8167600000000000
2013-01-01	3.8528300000000004
2014-01-01	3.5983900000000000
2015-01-01	2.0822700000000003
2016-01-01	3.9263100000000000