Year	Percent
1994-01-01	538.311000000000000
1995-01-01	7.504580000000001
1996-01-01	12.395800000000000
1997-01-01	20.299300000000000
1998-01-01	19.348900000000000
1999-01-01	7.461340000000000
2000-01-01	38.516300000000000
2001-01-01	40.366200000000000
2002-01-01	37.105800000000000
2003-01-01	45.231600000000000
2004-01-01	50.572100000000000
2005-01-01	38.640200000000000
2006-01-01	62.857000000000000
2007-01-01	57.575900000000000
2008-01-01	54.687200000000000
2009-01-01	68.260500000000000
2010-01-01	57.851100000000000
2011-01-01	61.575200000000000
2012-01-01	43.217800000000000
2013-01-01	29.808700000000000
2014-01-01	30.884700000000000
2015-01-01	36.404500000000000
2016-01-01	28.507200000000000
2017-01-01	21.635300000000000