Year	Percent
1980-01-01	0.583476000000000000
1981-01-01	0.626300000000000000
1982-01-01	0.578066000000000000
1983-01-01	0.585063000000000000
1984-01-01	0.750390000000000000
1985-01-01	1.946520000000000000
1986-01-01	1.693140000000000000
1987-01-01	1.598190000000000000
1988-01-01	1.563710000000000000
1989-01-01	1.444760000000000000
1990-01-01	0.701857000000000000
1991-01-01	0.465517000000000000
1992-01-01	0.654291000000000000
1993-01-01	0.621208000000000000
1994-01-01	0.836537000000000100
1995-01-01	0.770666000000000000
1996-01-01	0.907258000000000000
1997-01-01	1.278590000000000000
1998-01-01	1.831220000000000000
1999-01-01	1.568270000000000000
2000-01-01	1.573100000000000000
2001-01-01	1.772950000000000000
2002-01-01	1.997459999999999800
2003-01-01	1.780270000000000000
2004-01-01	1.951309999999999900
2005-01-01	1.592690000000000000
2006-01-01	1.323170000000000200
2007-01-01	0.441866000000000000
2008-01-01	0.320728000000000000
2009-01-01	0.209616000000000000
2010-01-01	0.196144000000000000
2011-01-01	0.103455999999999990
2012-01-01	0.086235000000000000
2013-01-01	0.022433000000000000
2014-01-01	0.020534999999999998
2015-01-01	0.025180000000000000
2016-01-01	0.062641000000000000