Year | Value | 2021 | 75,638.12 | 2020 | 324,226.537 | 2018 | 282,539 | 2017 | 282,539 | 2016 | 378,803 | 2015 | 370,165 | 2014 | 301,260 | 2013 | 351,564 | 2012 | 320,945.999811 | 2011 | 279,347.6183915 | 2010 | 258,828 | 2009 | 261,480 | 2008 | 264,404 | 2007 | 254,783 | 2006 | 239,045 | 2005 | 243,022 | 2004 | 225,021 | 2003 | 200,857 | 2002 | 250,532 | 2001 | 308,096 | 2000 | 607,976 | 1999 | 651,000 | 1998 | 788,900 | 1997 | 790,100 | 1996 | 653,700 | 1995 | 625,700 | 1994 | 675,300 | 1993 | 594,600 | 1992 | 677,900 | 1991 | 740,200 | 1990 | 601,300 | 1989 | 583,400 | 1988 | 525,100 | 1987 | 459,900 | 1986 | 451,500 | 1985 | 453,100 | 1984 | 440,700 | 1983 | 449,200 | 1982 | 448,600 | 1981 | 535,200 | 1980 | 412,300 | 1973 | 340,000 | 1972 | 315,000 | 1971 | 291,300 | 1970 | 267,400 |
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