| Year | Value | | 2021 | 40,633 | | 2020 | 356 | | 2019 | 526,333.99508055 | | 2018 | 580,174.15683482 | | 2017 | 590,517 | | 2016 | 1,042,929 | | 2015 | 1,039,810 | | 2014 | 1,216,152 | | 2013 | 1,218,000 | | 2012 | 1,310,276.4134174 | | 2011 | 1,424,420.1553899 | | 2010 | 1,554,309 | | 2009 | 747,969 | | 2008 | 813,010 | | 2007 | 800,207 | | 2006 | 754,912 | | 2005 | 778,260 | | 2004 | 714,000 | | 2003 | 1,428,487 | | 2002 | 1,286,925 | | 2001 | 1,369,069 | | 2000 | 1,426,114 | | 1999 | 1,371,300 | | 1998 | 1,245,200 | | 1997 | 1,250,000 | | 1996 | 1,098,000 | | 1995 | 1,050,000 | | 1994 | 1,000,000 | | 1993 | 955,000 | | 1992 | 913,500 | | 1991 | 870,000 | | 1990 | 755,000 | | 1989 | 740,000 | | 1988 | 700,000 | | 1987 | 582,000 | | 1986 | 600,000 | | 1985 | 500,000 | | 1984 | 420,000 | | 1983 | 385,000 | | 1982 | 376,800 | | 1981 | 389,000 |
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