Year	Percent
2000-01-01	8.99913636138260
2001-01-01	9.84863891105929
2002-01-01	10.16937018776010
2003-01-01	9.78192299005239
2004-01-01	9.51246748767481
2005-01-01	9.12527423298995
2006-01-01	5.88884471986710
2007-01-01	4.07303985147150
2008-01-01	3.16467692944374
2009-01-01	3.50230810268857
2010-01-01	4.07604269345219
2011-01-01	4.24886994678457
2012-01-01	4.49671935834430
2013-01-01	4.58505102365184