Year Measure 1990 2330.57023 1991 2322.34071 1992 2328.25442 1993 1914.22942 1994 1896.30351 1995 2074.37944 1996 1965.69009 1997 1802.87028 1998 1684.00084 1999 1795.30617 2000 1696.06402 2001 1445.87572 2002 1365.94065 2003 1644.35984 2004 1417.90899 2005 1374.30752 2006 1377.4337 2007 1456.2296 2008 1378.72036 2009 1323.72337 2010 1371.72121 2011 1649.25833 2012 1809.10258 2013 1887.02007 2014 1941.22183