Year Percent 1995-01-01 19.376200000000000 1996-01-01 26.339400000000000 1997-01-01 19.757200000000000 1998-01-01 69.339100000000000 1999-01-01 18.257000000000000 2000-01-01 16.195200000000000 2001-01-01 13.296300000000000 2002-01-01 14.576800000000000 2003-01-01 7.194889999999999 2004-01-01 16.117300000000000 2005-01-01 10.602000000000000 2006-01-01 8.519050000000000 2007-01-01 11.220100000000000 2008-01-01 18.352000000000000 2009-01-01 13.167900000000000 2010-01-01 11.394000000000000 2011-01-01 57.840700000000000 2012-01-01 16.461800000000000 2013-01-01 7.061910000000001 2014-01-01 2.739420000000000 2015-01-01 2.552030000000000 2016-01-01 1.790800000000000