Year	Percent
1980-01-01	0.038829000000000000
1981-01-01	0.035950000000000000
1982-01-01	0.033783999999999995
1983-01-01	0.034796000000000000
1984-01-01	0.034617000000000000
1985-01-01	0.007683000000000000
1986-01-01	0.075509000000000000
1987-01-01	0.178565000000000000
1988-01-01	0.163692000000000000
1989-01-01	0.152204000000000000
1990-01-01	0.150554000000000000
1991-01-01	0.474163000000000000
1992-01-01	0.374066000000000000
1993-01-01	0.495519000000000000
1994-01-01	0.655369000000000000
1995-01-01	0.882147999999999900
1996-01-01	1.726940000000000100
1997-01-01	2.247179999999999700
1998-01-01	3.823760000000000000
1999-01-01	5.747950000000000000
2000-01-01	7.323220000000000000
2001-01-01	10.905600000000000000
2002-01-01	11.268700000000000000
2003-01-01	12.148800000000000000
2004-01-01	10.634400000000000000
2005-01-01	8.907550000000000000
2006-01-01	9.200420000000000000
2007-01-01	7.625450000000000000
2008-01-01	6.079610000000000000
2009-01-01	7.693260000000000000
2010-01-01	6.300440000000000000
2011-01-01	5.720330000000001000
2012-01-01	5.487980000000000000
2013-01-01	5.613519999999999000
2014-01-01	5.881890000000000000
2015-01-01	8.218730000000000000
2016-01-01	9.088420000000000000