Year Measure 1990 2585.26322 1991 2079.0525 1992 1776.76783 1993 1548.32339 1994 963.63851 1995 786.95374 1996 811.54763 1997 725.52233 1998 677.33626 1999 624.93655 2000 649.38234 2001 585.99489 2002 583.874 2003 628.99047 2004 655.00683 2005 677.93126 2006 732.95745 2007 818.55096 2008 745.54814 2009 778.16063 2010 795.28604 2011 914.67535 2012 968.76627 2013 1032.14619 2014 1177.87041