Year	Percent
1995-01-01	4.52630867000000
1996-01-01	4.00329822250000
1997-01-01	4.15925257175000
1998-01-01	4.27800028525000
1999-01-01	4.87302421200000
2000-01-01	4.88416615925000
2001-01-01	4.31541996525000
2002-01-01	5.10464033375000
2003-01-01	5.69072129700000
2004-01-01	7.23282024975000
2005-01-01	6.23404466650000
2006-01-01	6.03325139925000
2007-01-01	4.57370514650000
2008-01-01	4.36678803925000
2009-01-01	5.09599440225000
2010-01-01	4.34014202025000
2011-01-01	3.75035128950000
2012-01-01	4.35833333333333
2013-01-01	3.69166666666667
2014-01-01	3.86666666666667
2015-01-01	3.39166666666667
2016-01-01	2.97500000000000
2017-01-01	3.02500000000000