Year Percent 1994-01-01 0.41272600000000004 1995-01-01 0.36099400000000000 1996-01-01 0.65263700000000000 1997-01-01 1.22458000000000000 1998-01-01 1.22783000000000000 1999-01-01 1.80715999999999990 2000-01-01 1.14500000000000000 2001-01-01 0.81838300000000000 2002-01-01 0.54081400000000000 2003-01-01 0.31121300000000000 2004-01-01 0.59874200000000000 2005-01-01 0.90843100000000000 2006-01-01 1.34297999999999980 2007-01-01 1.66005999999999990 2008-01-01 1.63002000000000000 2009-01-01 1.27187000000000000 2010-01-01 0.83896100000000010 2011-01-01 0.70534200000000000 2012-01-01 0.70686500000000000 2013-01-01 0.67943800000000000 2014-01-01 1.81362000000000000 2015-01-01 1.86464000000000000 2016-01-01 2.32645000000000000