Year	Percent
1980-01-01	0.20770400000000000
1981-01-01	0.22008699999999998
1982-01-01	0.47198700000000000
1983-01-01	0.81492600000000000
1984-01-01	0.73559300000000000
1985-01-01	0.72217000000000000
1986-01-01	1.08697000000000000
1987-01-01	1.22753000000000000
1988-01-01	1.18062999999999980
1989-01-01	0.92131800000000010
1990-01-01	1.19397999999999980
1991-01-01	1.16093999999999990
1992-01-01	1.31857000000000000
1993-01-01	1.09522000000000000
1994-01-01	1.78005000000000000
1995-01-01	1.60805000000000000
1996-01-01	3.77043000000000000
1997-01-01	6.22173000000000000
1998-01-01	11.84930000000000000
1999-01-01	7.26336000000000050
2000-01-01	5.53533000000000000
2001-01-01	4.63914000000000000
2002-01-01	3.77318000000000040
2003-01-01	3.36595000000000000
2004-01-01	3.30083000000000040
2005-01-01	3.84899999999999980
2006-01-01	4.14885000000000000
2007-01-01	3.80119000000000000
2008-01-01	3.74098000000000040
2009-01-01	5.42606999999999900
2010-01-01	4.67365000000000000
2011-01-01	4.49607000000000000
2012-01-01	5.52654000000000000
2013-01-01	6.50038000000000100
2014-01-01	7.35278000000000000
2015-01-01	10.06360000000000000
2016-01-01	10.61890000000000000