Year	Percent
1993-01-01	4.5971300000000000
1994-01-01	5.2744700000000000
1995-01-01	4.0603700000000000
1996-01-01	4.2136200000000000
1997-01-01	4.8622500000000000
1998-01-01	5.6386199999999995
1999-01-01	5.8361100000000000
2000-01-01	5.7777300000000000
2001-01-01	5.4211599999999995
2002-01-01	4.7049699999999990
2003-01-01	3.8758100000000000
2004-01-01	3.9199699999999997
2005-01-01	3.5419400000000003
2006-01-01	3.6207800000000003
2007-01-01	4.5443700000000000
2008-01-01	3.5267100000000000
2009-01-01	3.1822900000000000
2010-01-01	3.1400700000000000
2011-01-01	3.1408600000000000
2012-01-01	2.8848800000000000
2013-01-01	3.0867200000000000
2014-01-01	3.9059600000000000
2015-01-01	3.5610100000000000
2016-01-01	3.0368900000000000