Year	Percent
1976-01-01	0.03879100000000000
1977-01-01	0.15775500000000000
1978-01-01	0.23935800000000000
1979-01-01	0.43152700000000005
1980-01-01	0.26946900000000000
1981-01-01	0.27723400000000004
1982-01-01	0.51008700000000000
1983-01-01	0.23208499999999999
1984-01-01	0.18540500000000000
1985-01-01	0.16695600000000000
1986-01-01	0.20664699999999997
1987-01-01	0.20766400000000000
1988-01-01	0.15890300000000000
1989-01-01	0.16445300000000000
1990-01-01	0.10306300000000002
1991-01-01	0.18556900000000000
1992-01-01	0.09088700000000000
1993-01-01	0.19939000000000000
1994-01-01	1.66244000000000010
1995-01-01	1.63324000000000000
1996-01-01	0.95358500000000000
1997-01-01	0.28284000000000004
1998-01-01	0.21501700000000000
1999-01-01	0.18253800000000000
2000-01-01	0.38193000000000000
2001-01-01	0.46874700000000000
2002-01-01	0.42979300000000004
2003-01-01	0.52098600000000000
2004-01-01	0.46960000000000000
2005-01-01	0.34360300000000005
2006-01-01	0.91975000000000000
2007-01-01	3.17638000000000000
2008-01-01	1.39497999999999990
2009-01-01	1.72187000000000000
2010-01-01	1.84428000000000000
2011-01-01	2.65417999999999980
2012-01-01	2.48677000000000000
2013-01-01	2.23302000000000020
2014-01-01	2.29017000000000030
2015-01-01	1.92325999999999970
2016-01-01	2.03543000000000000
2017-01-01	2.35635000000000000