Year	Percent
1996-01-01	5.5883300000000000
1997-01-01	5.2359000000000000
1998-01-01	5.6180900000000005
1999-01-01	5.6224800000000000
2000-01-01	5.2638400000000000
2001-01-01	2.3389700000000000
2002-01-01	7.1115000000000000
2003-01-01	3.7376099999999997
2004-01-01	10.3984000000000000
2005-01-01	6.4088500000000000
2006-01-01	6.8744399999999990
2007-01-01	6.4654200000000000
2008-01-01	6.7040899999999990
2009-01-01	8.1271200000000000
2010-01-01	8.8855000000000000
2011-01-01	8.8648300000000000
2012-01-01	6.3813000000000000
2013-01-01	6.3813000000000000
2014-01-01	6.3813000000000000
2015-01-01	5.8823500000000000