Year	Percent
1999-01-01	24.298600000000000
2000-01-01	24.235400000000000
2001-01-01	10.983500000000000
2002-01-01	18.976100000000000
2003-01-01	20.168300000000000
2004-01-01	20.338100000000000
2005-01-01	15.600200000000000
2006-01-01	23.842200000000000
2007-01-01	20.025900000000000
2008-01-01	6.144660000000000
2009-01-01	12.262000000000000
2010-01-01	10.506700000000000
2011-01-01	6.985010000000001
2012-01-01	6.185270000000000
2013-01-01	6.630400000000000
2014-01-01	8.566780000000000
2015-01-01	7.903230000000001
2016-01-01	16.508400000000000