Year	Percent
1985-01-01	1.7736299999999998
1986-01-01	3.7473600000000000
1987-01-01	4.4004500000000000
1988-01-01	6.2887600000000000
1989-01-01	4.9846300000000000
1990-01-01	3.4102400000000000
1991-01-01	1.9929200000000000
1992-01-01	2.0503400000000003
1993-01-01	2.1992100000000000
1994-01-01	4.3694600000000000
1995-01-01	9.5492000000000000
1996-01-01	9.2044600000000010
1997-01-01	2.6674000000000000
1998-01-01	1.0436700000000000
1999-01-01	232.4009999999999800
2000-01-01	3.2035900000000000
2001-01-01	8.0214300000000000
2002-01-01	7.8874300000000000
2003-01-01	7.6339399999999990
2004-01-01	7.1136899999999990
2005-01-01	14.7538000000000000
2006-01-01	18.6031000000000000
2007-01-01	17.4634000000000000
2008-01-01	24.1573000000000000
2009-01-01	35.2499000000000000
2010-01-01	33.4181000000000000
2011-01-01	28.5353000000000000
2012-01-01	28.5631000000000000
2013-01-01	28.8347000000000000
2014-01-01	14.9728000000000000
2015-01-01	22.0324000000000000
2016-01-01	18.9885000000000000