Year	Percent
1987-01-01	0.002239000000000000
1988-01-01	0.000926000000000000
1989-01-01	0.052780999999999995
1990-01-01	0.031082000000000000
1991-01-01	0.043905000000000000
1992-01-01	0.526937000000000000
1993-01-01	0.129196000000000000
1994-01-01	0.385362000000000000
1995-01-01	1.784390000000000100
1996-01-01	4.337480000000000000
1997-01-01	4.050120000000000000
1998-01-01	3.078670000000000200
1999-01-01	1.953340000000000000
2000-01-01	2.319600000000000000
2001-01-01	3.898200000000000000
2002-01-01	4.319269999999999500
2003-01-01	4.203780000000000000
2004-01-01	4.881900000000000000
2005-01-01	3.716910000000000000
2006-01-01	2.746820000000000000
2007-01-01	1.985979999999999900
2008-01-01	1.205470000000000000
2009-01-01	2.171690000000000300
2010-01-01	1.580800000000000000
2011-01-01	0.591463000000000000
2012-01-01	0.644664000000000000
2013-01-01	0.820675000000000000
2014-01-01	0.849135000000000100
2015-01-01	0.847328000000000100
2016-01-01	0.893324000000000000