Year Percent 1995-01-01 108.67900000000000 1996-01-01 132.23900000000000 1997-01-01 138.13299999999998 1998-01-01 105.09100000000001 1999-01-01 101.09800000000000 2000-01-01 90.81650000000000 2001-01-01 78.14710000000000 2002-01-01 66.24740000000000 2003-01-01 62.04220000000000 2004-01-01 53.71460000000000 2005-01-01 52.95210000000000 2006-01-01 43.75640000000000 2007-01-01 61.17340000000000 2008-01-01 60.21310000000000 2009-01-01 55.21060000000000 2010-01-01 48.94340000000000 2011-01-01 41.26380000000000 2012-01-01 36.69200000000000 2013-01-01 34.81650000000000 2014-01-01 40.58970000000000 2015-01-01 36.72090000000000 2016-01-01 37.67930000000000