Year	Percent
1995-01-01	19.9898000000000000
1996-01-01	42.1049000000000000
1997-01-01	12.5339000000000000
1998-01-01	44.9752000000000000
1999-01-01	1.0448100000000000
2000-01-01	0.9607930000000000
2001-01-01	0.9373720000000000
2002-01-01	0.9273120000000000
2003-01-01	0.8905150000000000
2004-01-01	0.8077979999999999
2005-01-01	0.7721990000000000
2006-01-01	2.8908000000000000
2007-01-01	4.4211900000000000
2008-01-01	6.1963599999999990
2009-01-01	6.9229600000000010
2010-01-01	7.0105699999999995
2011-01-01	6.6938500000000000