Year Percent 1992-01-01 3.21752000000000000 1993-01-01 5.10739000000000050 1994-01-01 0.17899700000000000 1995-01-01 0.06775199999999999 1996-01-01 0.88697399999999990 1997-01-01 1.14352000000000000 1998-01-01 1.61568000000000000 1999-01-01 1.24236000000000010 2000-01-01 1.63772000000000000 2001-01-01 2.53337000000000000 2002-01-01 2.56470000000000000 2003-01-01 2.24708000000000000 2004-01-01 2.10633000000000000 2005-01-01 2.03903000000000000 2006-01-01 1.80014000000000000 2007-01-01 1.85477999999999990 2008-01-01 2.30224000000000030 2009-01-01 3.40368000000000050 2010-01-01 4.13188000000000100 2011-01-01 4.60400000000000000 2012-01-01 4.77096000000000000 2013-01-01 5.60254000000000000 2014-01-01 5.42166000000000000 2015-01-01 5.64560000000000000 2016-01-01 9.04871000000000000