Year	Percent
1996-01-01	100.0000
1997-01-01	98.5948
1998-01-01	97.1558
1999-01-01	96.7066
2000-01-01	95.5687
2001-01-01	92.2311
2002-01-01	86.5574
2003-01-01	80.6846
2004-01-01	79.8128
2005-01-01	76.3909
2006-01-01	76.5957
2007-01-01	73.5999
2008-01-01	71.0107
2009-01-01	70.0897
2010-01-01	71.2040
2011-01-01	67.1004
2012-01-01	67.0532
2013-01-01	66.1693
2014-01-01	70.4028
2015-01-01	70.0249
2016-01-01	73.7322