Year	Percent
1996-01-01	40.52120
1997-01-01	33.10440
1998-01-01	74.41000
1999-01-01	67.18050
2000-01-01	20.81890
2001-01-01	28.94700
2002-01-01	4.48640
2003-01-01	7.76100
2004-01-01	5.75179
2005-01-01	6.82947
2006-01-01	8.68348
2007-01-01	15.21080
2008-01-01	16.94250
2009-01-01	18.37340
2010-01-01	14.93960
2011-01-01	9.48409
2012-01-01	8.91783
2013-01-01	10.50730
2014-01-01	10.51650
2015-01-01	16.82000
2016-01-01	17.99690
2017-01-01	21.43690