Year	Percent
1996-01-01	27.72160
1997-01-01	35.21670
1998-01-01	29.32970
1999-01-01	28.01290
2000-01-01	27.15870
2001-01-01	26.48110
2002-01-01	22.39640
2003-01-01	28.97970
2004-01-01	35.37180
2005-01-01	35.24650
2006-01-01	31.97140
2007-01-01	27.74660
2008-01-01	21.65110
2009-01-01	16.34270
2010-01-01	13.67190
2011-01-01	12.36920
2012-01-01	13.91560
2013-01-01	12.61940
2014-01-01	13.43520
2015-01-01	11.95700
2016-01-01	9.33194