Year Measure 1995 266.2641 1996 270.20121 1997 266.90537 1998 295.9357 1999 289.17564 2000 280.79893 2001 276.57016 2002 316.14829 2003 320.14116 2004 259.44769 2005 258.91914 2006 254.50694 2007 254.30665 2008 251.33552 2009 360.58183 2010 370.34973 2011 381.33502 2012 390.88532 2013 397.00974 2014 416.93966