Year Percent 1994-01-01 13.55490000000000 1995-01-01 20.20470000000000 1996-01-01 31.05110000000000 1997-01-01 42.10940000000000 1998-01-01 48.12490000000000 1999-01-01 48.12640000000000 2000-01-01 59.26780000000000 2001-01-01 97.92760000000000 2002-01-01 140.22000000000000 2003-01-01 169.19099999999997 2004-01-01 180.60600000000000 2005-01-01 181.12000000000000 2006-01-01 192.03000000000000 2007-01-01 192.54800000000000 2008-01-01 169.05400000000000 2009-01-01 175.33300000000000 2010-01-01 152.95400000000000 2011-01-01 138.98100000000000 2012-01-01 140.74000000000000 2013-01-01 170.80800000000000 2014-01-01 173.72900000000000 2015-01-01 239.89400000000000 2016-01-01 284.13700000000000