Year	Percent
1983-01-01	1.321680000000000
1984-01-01	1.321680000000000
1985-01-01	2.399810000000000
1986-01-01	2.568950000000000
1987-01-01	4.280690000000000
1988-01-01	6.016430000000001
1989-01-01	13.095900000000000
1990-01-01	6.657070000000000
1991-01-01	8.971160000000001
1992-01-01	10.464900000000000
1993-01-01	8.684350000000000
1994-01-01	4.535080000000001
1995-01-01	6.701389999999999
1996-01-01	1.468650000000000
1997-01-01	25.919500000000000
1998-01-01	32.960000000000000
1999-01-01	17.978900000000000
2000-01-01	16.936500000000000
2001-01-01	15.229100000000000
2002-01-01	19.684100000000000
2003-01-01	11.213200000000000
2004-01-01	11.126700000000000
2005-01-01	9.216100000000000
2006-01-01	10.713600000000000
2007-01-01	23.631900000000000
2008-01-01	26.060900000000000
2009-01-01	22.361700000000000
2010-01-01	27.348100000000000
2011-01-01	30.444200000000000
2012-01-01	25.736400000000000
2013-01-01	20.825900000000000
2014-01-01	14.646600000000000
2015-01-01	13.304200000000000
2016-01-01	9.766280000000000