Year	Percent
1996-01-01	31.3739000000000000
1997-01-01	20.5568000000000000
1998-01-01	17.3831000000000000
1999-01-01	14.8458000000000000
2000-01-01	10.5619000000000000
2001-01-01	7.9206699999999990
2002-01-01	3.5804199999999997
2003-01-01	4.5016400000000000
2004-01-01	6.6956100000000000
2005-01-01	8.3397899999999990
2006-01-01	15.7924000000000000
2007-01-01	17.7502000000000000
2008-01-01	17.5790000000000000
2009-01-01	24.5322000000000000
2010-01-01	15.8332000000000000
2011-01-01	14.5536000000000000
2012-01-01	12.7567000000000000
2013-01-01	18.7600000000000000
2014-01-01	21.8017000000000000
2015-01-01	25.1643000000000000
2016-01-01	25.8158000000000000