Year	Percent
1989-01-01	0.2131680000000000
1990-01-01	0.2193330000000000
1991-01-01	0.1841590000000000
1992-01-01	0.2078100000000000
1993-01-01	0.2549490000000000
1994-01-01	1.7115099999999999
1995-01-01	2.6566900000000000
1996-01-01	2.1875800000000000
1997-01-01	0.9002500000000000
1998-01-01	0.8084850000000000
1999-01-01	1.2975800000000000
2000-01-01	2.2976500000000000
2001-01-01	2.0636099999999997
2002-01-01	1.1678800000000000
2003-01-01	0.7422410000000000
2004-01-01	0.6355770000000001
2005-01-01	1.0312500000000000
2006-01-01	1.4100700000000002
2007-01-01	1.5280500000000000
2008-01-01	2.4058200000000003
2009-01-01	3.0049700000000000
2010-01-01	4.0946099999999990
2011-01-01	3.1952000000000000
2012-01-01	2.4323200000000003
2013-01-01	1.8234599999999999
2014-01-01	1.3821800000000000