Year	Percent
1980-01-01	0.13828400000000000
1981-01-01	0.09763100000000000
1982-01-01	0.06536499999999999
1983-01-01	0.04116800000000000
1984-01-01	0.02512200000000000
1985-01-01	0.01798800000000000
1986-01-01	0.01798800000000000
1987-01-01	0.01798800000000000
1988-01-01	0.00047500000000000
1989-01-01	0.00047500000000000
1990-01-01	0.00047500000000000
1991-01-01	0.00047500000000000
1992-01-01	0.00047500000000000
1993-01-01	1.50762000000000020
1994-01-01	17.88540000000000000
1995-01-01	19.98040000000000000
1996-01-01	20.74330000000000000
1997-01-01	20.64400000000000200
1998-01-01	18.40450000000000000
1999-01-01	5.77180000000000000
2000-01-01	11.91170000000000000
2001-01-01	21.30960000000000000
2002-01-01	23.51730000000000000
2003-01-01	22.25690000000000000
2004-01-01	22.29830000000000000
2005-01-01	24.09490000000000000
2006-01-01	22.31120000000000000
2007-01-01	17.34850000000000000
2008-01-01	13.79250000000000000
2009-01-01	14.64400000000000000
2010-01-01	15.66790000000000000
2011-01-01	17.52540000000000000
2012-01-01	17.81500000000000000
2013-01-01	19.69760000000000000
2014-01-01	23.31010000000000000
2015-01-01	25.33630000000000000
2016-01-01	27.35500000000000000