Year	Percent
1996-01-01	7.9626300000000000
1997-01-01	6.7257399999999990
1998-01-01	6.3450200000000000
1999-01-01	5.7805800000000005
2000-01-01	6.5537199999999990
2001-01-01	5.6423900000000000
2002-01-01	4.6276800000000010
2003-01-01	6.0949100000000000
2004-01-01	6.0460300000000000
2005-01-01	5.6939199999999990
2006-01-01	6.0171400000000000
2007-01-01	5.4799200000000000
2008-01-01	2.9375900000000000
2009-01-01	4.8676500000000000
2010-01-01	4.1326100000000000
2011-01-01	3.6400900000000003
2012-01-01	3.5527900000000003
2013-01-01	3.0521300000000000
2014-01-01	3.2437300000000000
2015-01-01	2.6372600000000000
2016-01-01	5.2874099999999995