Year	Percent
1994-01-01	13.1492000000000000
1995-01-01	10.2742000000000000
1996-01-01	8.8216700000000000
1997-01-01	5.5666699999999990
1998-01-01	6.9850000000000000
1999-01-01	6.8983300000000005
2000-01-01	3.6738300000000000
2001-01-01	3.7475000000000000
2002-01-01	3.9611800000000000
2003-01-01	3.1095800000000000
2004-01-01	3.4947699999999995
2005-01-01	2.7956500000000000
2006-01-01	2.1878500000000000
2007-01-01	2.0867400000000003
2008-01-01	2.8304400000000003
2009-01-01	4.5669100000000000
2010-01-01	6.6541500000000000
2011-01-01	4.8494400000000000
2012-01-01	5.0729900000000000
2013-01-01	4.9474800000000005
2014-01-01	4.2563200000000000
2015-01-01	3.9777000000000000