Year	Percent
1995-01-01	7.01307628800000
1996-01-01	6.79566915475000
1997-01-01	7.79720209700000
1998-01-01	8.67973337450000
1999-01-01	9.02489953000000
2000-01-01	8.87009445125000
2001-01-01	9.50506442900000
2002-01-01	10.46638977000000
2003-01-01	10.88978016100000
2004-01-01	10.49500517000000
2005-01-01	9.15557279800000
2006-01-01	8.51854579150000
2007-01-01	7.40160094950000
2008-01-01	6.17723110850000
2009-01-01	7.65484882400000
2010-01-01	6.75150310000000
2011-01-01	5.70529337050000
2012-01-01	6.95000000000000
2013-01-01	6.31666666666667
2014-01-01	5.99166666666667
2015-01-01	5.33333333333333
2016-01-01	4.90833333333333
2017-01-01	4.29166666666667