| Year | Value | | 2021 | 5,888.41652 | | 2020 | 4,314.60456 | | 2019 | 6,480.99978 | | 2018 | 6,810.61016 | | 2017 | 6,845.22951 | | 2016 | 5,863.19654 | | 2015 | 4,761.04707 | | 2014 | 4,413.55935 | | 2013 | 4,249.26882 | | 2012 | 4,132.144 | | 2011 | 3,900.12005 | | 2010 | 3,531.583 | | 2009 | 2,305.548 | | 2008 | 2,399.593 | | 2007 | 1,224.313 | | 2006 | 1,926.295 | | 2005 | 1,541.219 | | 2004 | 1,415.785 | | 2003 | 1,113.381 | | 2002 | 1,039.064 | | 2001 | 897.637 | | 2000 | 1,041.409 | | 1999 | 871.799987793 | | 1998 | 736.5 | | 1997 | 788.299987793 | | 1996 | 853.5999755859 | | 1995 | 890.0999755859 | | 1994 | 815.4000244141 | | 1993 | 848.700012207 |
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