Year	Percent
1980-01-01	0.016033000000000002
1981-01-01	0.010439000000000000
1982-01-01	0.006679999999999999
1983-01-01	0.003834000000000000
1984-01-01	0.002236000000000000
1985-01-01	0.109349000000000000
1986-01-01	0.180874000000000000
1987-01-01	0.020449000000000002
1988-01-01	0.024028000000000000
1989-01-01	0.003901000000000000
1990-01-01	0.379131000000000000
1991-01-01	0.210344000000000000
1992-01-01	0.133556000000000000
1993-01-01	0.312251000000000000
1994-01-01	0.303961000000000040
1995-01-01	0.563083000000000000
1996-01-01	0.920697999999999900
1997-01-01	1.435650000000000000
1998-01-01	3.249850000000000000
1999-01-01	2.482830000000000000
2000-01-01	2.178220000000000000
2001-01-01	2.321290000000000300
2002-01-01	1.848530000000000000
2003-01-01	1.117540000000000000
2004-01-01	0.789960999999999900
2005-01-01	0.690774000000000000
2006-01-01	0.466133000000000000
2007-01-01	0.344026000000000000
2008-01-01	0.261971000000000000
2009-01-01	0.257695000000000000
2010-01-01	0.267341000000000000
2011-01-01	0.520935000000000000
2012-01-01	1.046340000000000000
2013-01-01	1.164040000000000000
2014-01-01	1.454230000000000000
2015-01-01	0.971722000000000000
2016-01-01	1.639820000000000000