Year | Value | 2021 | 135,902.983 | 2020 | 123,038.32 | 2019 | 192,514 | 2018 | 187,851 | 2017 | 184,762 | 2016 | 181,125 | 2015 | 186,209 | 2014 | 189,722 | 2013 | 203,520 | 2012 | 203,388 | 2011 | 206,937 | 2010 | 207,872 | 2009 | 217,178 | 2008 | 220,375 | 2007 | 219,243 | 2006 | 220,990 | 2005 | 209,469 | 2004 | 196,657 | 2003 | 247,388 | 2002 | 242,720 | 2001 | 266,139 | 2000 | 240,046 | 1999 | 227,500 | 1998 | 236,100 | 1997 | 256,800 | 1996 | 187,400 | 1995 | 127,600 | 1994 | 125,800 | 1993 | 123,600 | 1992 | 122,900 | 1991 | 109,200 | 1990 | 128,300 | 1989 | 126,500 | 1988 | 111,500 | 1987 | 98,700 | 1986 | 93,100 | 1985 | 96,200 | 1984 | 90,500 | 1983 | 78,600 | 1982 | 75,000 | 1981 | 78,000 | 1980 | 87,700 | 1979 | 91,500 | 1978 | 90,200 | 1977 | 89,100 | 1976 | 98,100 | 1975 | 103,400 | 1974 | 103,700 | 1973 | 96,900 | 1972 | 90,600 | 1971 | 86,600 | 1970 | 83,600 |
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