Year Percent 2000-01-01 10.300000000000000 2001-01-01 10.300000000000000 2002-01-01 10.300000000000000 2003-01-01 10.300000000000000 2004-01-01 10.300000000000000 2005-01-01 10.300000000000000 2006-01-01 10.300000000000000 2007-01-01 10.300000000000000 2008-01-01 10.300000000000000 2009-01-01 10.300000000000000 2010-01-01 10.300000000000000 2011-01-01 10.300000000000000 2012-01-01 7.060780000000000 2013-01-01 8.382650000000000 2014-01-01 9.111410000000001 2015-01-01 8.524320000000000 2016-01-01 8.440350000000000