Year	Percent
1995-01-01	8.73973660075000
1996-01-01	7.91029335475000
1997-01-01	8.89729453600000
1998-01-01	9.33653966800000
1999-01-01	9.48155603700000
2000-01-01	9.25238270925000
2001-01-01	9.99661034125000
2002-01-01	10.70044837450000
2003-01-01	11.44416466100000
2004-01-01	11.46219708750000
2005-01-01	9.65927034675000
2006-01-01	9.07914386525000
2007-01-01	8.01173166850000
2008-01-01	6.56729598675000
2009-01-01	7.59928309950000
2010-01-01	6.56265416275000
2011-01-01	5.68512656950000
2012-01-01	7.05833333333333
2013-01-01	6.36666666666667
2014-01-01	6.00000000000000
2015-01-01	5.47500000000000
2016-01-01	5.01666666666667
2017-01-01	4.40833333333333