Year	Percent
1995-01-01	34.5770631600000
1996-01-01	35.3280230225000
1997-01-01	35.8208837450000
1998-01-01	36.2579226350000
1999-01-01	36.5130512025000
2000-01-01	36.2946585025000
2001-01-01	36.3824934250000
2002-01-01	36.8541897675000
2003-01-01	36.9290213625000
2004-01-01	36.4695332625000
2005-01-01	36.3729782200000
2006-01-01	35.8348143575000
2007-01-01	35.1283312750000
2008-01-01	34.8005138575000
2009-01-01	35.0336950125000
2010-01-01	34.5472456700000
2011-01-01	35.5071811000000
2012-01-01	27.1250000000000
2013-01-01	27.0083333333333
2014-01-01	26.9083333333333
2015-01-01	26.9500000000000
2016-01-01	27.2500000000000
2017-01-01	27.3833333333333