Year	Percent
1983-01-01	14.490200000000000
1984-01-01	13.903400000000000
1985-01-01	13.336900000000000
1986-01-01	10.241100000000000
1987-01-01	10.813400000000000
1988-01-01	11.561200000000000
1989-01-01	11.792800000000000
1990-01-01	12.800400000000000
1991-01-01	12.229700000000000
1992-01-01	10.415800000000000
1993-01-01	9.533410000000000
1994-01-01	17.357100000000000
1995-01-01	16.817100000000000
1996-01-01	11.888500000000000
1997-01-01	21.276100000000000
1998-01-01	20.574300000000000
1999-01-01	22.869400000000000
2000-01-01	26.143000000000000
2001-01-01	28.111400000000000
2002-01-01	31.140300000000000
2003-01-01	26.780600000000000
2004-01-01	22.712600000000000
2005-01-01	19.158500000000000
2006-01-01	16.375999999999998
2007-01-01	15.617800000000000
2008-01-01	11.246800000000000
2009-01-01	12.287600000000000
2010-01-01	12.864900000000000
2011-01-01	12.663900000000000
2012-01-01	12.496200000000000
2013-01-01	13.422800000000000
2014-01-01	9.893469999999999
2015-01-01	12.111500000000000
2016-01-01	12.703800000000000