Year Percent 1994-01-01 0.036576000000000000 1995-01-01 0.025365000000000002 1996-01-01 0.050950000000000000 1997-01-01 0.045344999999999996 1998-01-01 0.116732999999999990 1999-01-01 0.265318000000000000 2000-01-01 0.256420000000000000 2001-01-01 0.284894000000000000 2002-01-01 0.309694000000000000 2003-01-01 0.207123000000000000 2004-01-01 0.173191000000000000 2005-01-01 4.722190000000000000 2006-01-01 5.402150000000000000 2007-01-01 4.932469999999999500 2008-01-01 4.460050000000000000 2009-01-01 2.915370000000000200 2010-01-01 2.308950000000000000 2011-01-01 2.098050000000000000 2012-01-01 2.135510000000000000 2013-01-01 1.836679999999999900 2014-01-01 1.698750000000000000