Year | Value | 2021 | 5,488.635 | 2020 | 6,680.904 | 2019 | 11,094 | 2018 | 14,365 | 2017 | 14,365 | 2016 | 13,711 | 2015 | 13,107 | 2014 | 11,532 | 2013 | 11,352 | 2012 | 6,659.6983587391 | 2011 | 7,048.9546112685 | 2010 | 7,388 | 2009 | 13,529 | 2008 | 13,649 | 2007 | 13,640 | 2006 | 13,883 | 2005 | 12,318 | 2004 | 11,512 | 2003 | 9,745 | 2002 | 13,011 | 2001 | 12,496 | 2000 | 11,481 | 1999 | 12,500 | 1998 | 11,000 | 1997 | 10,800 | 1996 | 10,800 | 1995 | 10,400 | 1994 | 4,000 | 1993 | 3,800 | 1992 | 11,100 | 1991 | 11,100 | 1990 | 11,100 | 1989 | 11,100 | 1988 | 11,100 | 1987 | 11,100 | 1986 | 10,700 | 1985 | 10,900 | 1984 | 10,700 | 1983 | 9,600 | 1982 | 10,000 | 1981 | 9,200 | 1980 | 8,500 |
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