Year	Percent
1995-01-01	12.78154658000000
1996-01-01	12.00254078000000
1997-01-01	13.77183405750000
1998-01-01	16.40591387250000
1999-01-01	16.09510780750000
2000-01-01	16.97477359750000
2001-01-01	18.32676101500000
2002-01-01	20.91473188250000
2003-01-01	22.11392678000000
2004-01-01	19.62759378250000
2005-01-01	16.78362880500000
2006-01-01	17.26539163750000
2007-01-01	15.00050473750000
2008-01-01	11.84460155500000
2009-01-01	15.64550446250000
2010-01-01	14.45308647000000
2011-01-01	11.78619724500000
2012-01-01	11.55000000000000
2013-01-01	10.40833333333330
2014-01-01	10.02500000000000
2015-01-01	8.86666666666667
2016-01-01	8.21666666666667
2017-01-01	6.73333333333333