Year	Percent
1996-01-01	6.7680000000000000
1997-01-01	4.8871400000000005
1998-01-01	3.4119699999999997
1999-01-01	5.7154400000000000
2000-01-01	6.9861600000000010
2001-01-01	4.5292500000000000
2002-01-01	4.3187500000000000
2003-01-01	4.5945100000000000
2004-01-01	4.3752300000000000
2005-01-01	5.8785300000000005
2006-01-01	5.9240400000000000
2007-01-01	6.6355300000000000
2008-01-01	7.1558300000000000
2009-01-01	44.7056000000000000
2010-01-01	81.9004000000000000
2011-01-01	17.0893000000000000
2012-01-01	15.3110000000000000
2013-01-01	14.9250000000000000
2014-01-01	14.3537000000000000
2015-01-01	1.9198900000000000
2016-01-01	3.3503900000000000