Year | Value | 2014 | 2,583.3784642278 | 2013 | 2,880.5122726411 | 2012 | 2,660.5066452801 | 2011 | 3,040.0058988443 | 2010 | 3,020.1369150086 | 2009 | 2,653.3310039011 | 2008 | 2,495.0829781327 | 2007 | 2,375.6613844621 | 2006 | 2,316.3803024833 | 2005 | 2,413.5028657924 | 2004 | 2,404.9154530791 | 2003 | 2,435.1764681595 | 2002 | 2,384.9328912943 | 2001 | 2,255.536316413 | 2000 | 2,235.5474024462 | 1999 | 2,225.87187825 | 1998 | 2,258.7910741498 | 1997 | 1,887.9862964574 | 1996 | 1,611.4547388444 | 1995 | 1,196.3208776555 | 1994 | 1,133.1884827311 | 1993 | 1,038.0235026956 | 1992 | 900.03569705509 | 1991 | 763.62234075338 | 1990 | 389.57063750452 | 1989 | 638.20698442378 | 1988 | 1,041.3207649774 | 1987 | 1,231.5423475391 | 1986 | 1,142.6809471555 | 1985 | 1,088.0917331681 | 1984 | 1,089.5959549343 | 1983 | 1,054.396699056 | 1982 | 976.17920787145 | 1981 | 905.45060785103 | 1980 | 856.02398621724 | 1979 | 821.11141892739 | 1978 | 664.38294844671 | 1977 | 559.63399069359 | 1976 | 586.23920709193 | 1975 | 618.59439007336 | 1974 | 674.92631642916 | 1973 | 627.27616222171 | 1972 | 554.67654177133 | 1971 | 506.52358979042 |
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