Year Percent 2001-01-01 77.39900000000000 2002-01-01 98.30400000000000 2003-01-01 124.23500000000000 2004-01-01 190.72400000000002 2005-01-01 235.26500000000000 2006-01-01 284.73500000000000 2007-01-01 297.39000000000000 2008-01-01 274.42100000000000 2009-01-01 326.30800000000000 2010-01-01 300.26500000000000 2011-01-01 315.29100000000000 2012-01-01 335.88100000000000 2013-01-01 196.94200000000000 2014-01-01 217.92600000000000 2015-01-01 199.62400000000002 2016-01-01 166.19600000000000