Year	Percent
1980-01-01	0.02984300000000000
1981-01-01	0.14912500000000000
1982-01-01	0.93614000000000000
1983-01-01	1.52215000000000000
1984-01-01	1.52720000000000000
1985-01-01	2.85947000000000000
1986-01-01	3.31264000000000000
1987-01-01	3.68085000000000000
1988-01-01	6.05210000000000000
1989-01-01	7.68561000000000050
1990-01-01	7.06527000000000000
1991-01-01	9.43728999999999900
1992-01-01	7.99255000000000000
1993-01-01	5.40451000000000000
1994-01-01	4.95544000000000000
1995-01-01	5.17330000000000000
1996-01-01	4.84296999999999900
1997-01-01	4.32548000000000100
1998-01-01	4.05978000000000000
1999-01-01	3.09905000000000000
2000-01-01	2.59854000000000030
2001-01-01	6.00111000000000000
2002-01-01	8.90892000000000000
2003-01-01	8.20457000000000000
2004-01-01	7.14235000000000000
2005-01-01	6.07872000000000000
2006-01-01	5.25406000000000000
2007-01-01	4.04558000000000000
2008-01-01	3.25258000000000000
2009-01-01	2.82783000000000000
2010-01-01	2.27827000000000000
2011-01-01	1.65773000000000000
2012-01-01	1.27369000000000000
2013-01-01	1.05667999999999980
2014-01-01	0.95173999999999990
2015-01-01	0.48555299999999996
2016-01-01	0.12628300000000000