Year Percent 1995-01-01 37.739600000000000 1996-01-01 26.992700000000000 1997-01-01 34.369600000000000 1998-01-01 19.068700000000000 1999-01-01 23.679600000000000 2000-01-01 26.297800000000000 2001-01-01 25.347200000000000 2002-01-01 21.397300000000000 2003-01-01 22.241500000000000 2004-01-01 32.588100000000000 2005-01-01 28.704400000000000 2006-01-01 27.457900000000000 2007-01-01 25.177500000000000 2008-01-01 7.802580000000000 2009-01-01 6.434769999999999 2010-01-01 7.770660000000000 2011-01-01 7.148420000000000 2012-01-01 6.029790000000000 2013-01-01 6.639530000000001 2014-01-01 6.379600000000000 2015-01-01 6.343650000000000 2016-01-01 10.955800000000000