Year	Percent
1982-01-01	0.22475200000000000
1983-01-01	0.19460100000000000
1984-01-01	0.16364500000000000
1985-01-01	0.20681400000000000
1986-01-01	0.24200600000000000
1987-01-01	0.28657800000000000
1988-01-01	0.27186500000000000
1989-01-01	0.23028700000000000
1990-01-01	0.21317700000000000
1991-01-01	0.21358000000000002
1992-01-01	0.21358000000000002
1993-01-01	0.21358000000000002
1994-01-01	0.21358000000000002
1995-01-01	0.21358000000000002
1996-01-01	0.21358000000000002
1997-01-01	0.25959600000000000
1998-01-01	0.60150500000000010
1999-01-01	0.61092100000000000
2000-01-01	0.37535799999999997
2001-01-01	0.40107100000000000
2002-01-01	2.02780999999999970
2003-01-01	1.85945000000000000
2004-01-01	1.99327000000000000
2005-01-01	1.78507000000000020
2006-01-01	1.49380000000000000
2007-01-01	2.51099000000000000
2008-01-01	2.00698000000000000
2009-01-01	2.71917999999999970
2010-01-01	3.99451999999999960
2011-01-01	5.03326000000000000
2012-01-01	6.14124000000000000
2013-01-01	7.56858999999999950
2014-01-01	9.33279000000000000
2015-01-01	11.12540000000000000
2016-01-01	12.77730000000000000