Year	Percent
2000-01-01	0.9838450000000001
2001-01-01	0.9583690000000000
2002-01-01	0.9481209999999999
2003-01-01	0.9142120000000000
2004-01-01	0.8293620000000000
2005-01-01	0.7937140000000000
2006-01-01	2.8834500000000000
2007-01-01	4.2282600000000000
2008-01-01	6.5789000000000000
2009-01-01	6.7370000000000000
2010-01-01	7.0146100000000000
2011-01-01	6.5837900000000000