Year | Value | 2021 | 24,994.772987977 | 2020 | 20,971.43808721 | 2019 | 26,702.132156649 | 2018 | 24,859.525435251 | 2017 | 24,457.602265312 | 2016 | 24,018.878424644 | 2015 | 24,093.582638891 | 2014 | 23,111.232224386 | 2013 | 22,115.614213347 | 2012 | 21,813.971803901 | 2011 | 20,830.50178053 | 2010 | 20,513.792952013 | 2009 | 22,257.058757249 | 2008 | 24,816.242379671 | 2007 | 20,791.855272045 | 2006 | 22,021.670315182 | 2005 | 17,354.655943641 | 2004 | 20,771.109415231 | 2003 | 19,169.394428913 | 2002 | 17,676.121217246 | 2001 | 18,128.182467536 | 2000 | 18,604.834439167 | 1999 | 17,329.374327702 | 1998 | 17,483.803058951 | 1997 | 16,321.16790962 | 1996 | 15,252.134766403 | 1995 | 15,093.329864141 | 1994 | 14,813.775974743 | 1993 | 13,280.676999935 | 1992 | 12,204.472586677 | 1991 | 11,505.079190566 | 1990 | 10,405.618164562 | 1989 | 9,561.9654779725 | 1988 | 8,127.4428223269 | 1987 | 6,629.7503037643 | 1986 | 5,581.5687520467 |
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