Year	Percent
1983-01-01	24.918800000000000
1984-01-01	19.537900000000000
1985-01-01	16.470300000000000
1986-01-01	15.890999999999998
1987-01-01	18.972400000000000
1988-01-01	16.100700000000000
1989-01-01	21.808500000000000
1990-01-01	19.615800000000000
1991-01-01	21.365900000000000
1992-01-01	22.577600000000000
1993-01-01	24.123900000000000
1994-01-01	23.366700000000000
1995-01-01	25.269600000000000
1996-01-01	33.802700000000000
1997-01-01	39.222900000000000
1998-01-01	34.573500000000000
1999-01-01	50.340600000000000
2000-01-01	47.466100000000000
2001-01-01	49.197100000000000
2002-01-01	39.872000000000000
2003-01-01	30.929100000000000
2004-01-01	31.301600000000000
2005-01-01	39.417100000000000
2006-01-01	74.502300000000000
2007-01-01	83.522900000000000
2008-01-01	161.595000000000000
2009-01-01	135.316000000000000
2010-01-01	119.540000000000000
2011-01-01	111.221000000000000
2012-01-01	109.966000000000010
2013-01-01	92.838100000000000
2014-01-01	67.696600000000000
2015-01-01	65.940000000000000
2016-01-01	64.225500000000000