Year Percent 1990-01-01 0.46915500000000004 1991-01-01 0.48012299999999997 1992-01-01 0.53199200000000000 1993-01-01 0.58628000000000000 1994-01-01 0.60797800000000000 1995-01-01 0.64635900000000000 1996-01-01 0.66216100000000000 1997-01-01 0.69760700000000000 1998-01-01 0.63599200000000000 1999-01-01 0.66872600000000000 2000-01-01 0.72917500000000000 2001-01-01 0.74979700000000000 2002-01-01 0.83663899999999990 2003-01-01 0.85630499999999990 2004-01-01 0.83152000000000000 2005-01-01 0.79515600000000010 2006-01-01 0.88315400000000010 2007-01-01 1.07584000000000000 2008-01-01 0.73685200000000010 2009-01-01 0.71316899999999990 2010-01-01 0.78555200000000000 2011-01-01 0.85147500000000000 2012-01-01 1.10184000000000000 2013-01-01 1.44367999999999990 2014-01-01 1.21580000000000000 2015-01-01 1.38251000000000010 2016-01-01 1.27356000000000000