Year | Value | 2021 | 50,778 | 2020 | 33,178 | 2019 | 138,192 | 2018 | 134,354.48462213 | 2017 | 117,027 | 2016 | 99,428 | 2015 | 96,749 | 2014 | 90,625 | 2013 | 98,244 | 2012 | 82,576 | 2011 | 84,955 | 2010 | 78,265 | 2009 | 33,593 | 2008 | 32,045 | 2007 | 32,329 | 2006 | 29,039 | 2005 | 28,399 | 2004 | 26,218 | 2003 | 27,057 | 2002 | 25,873 | 2001 | 24,741 | 2000 | 29,080 | 1999 | 25,100 | 1998 | 19,800 | 1997 | 19,600 | 1996 | 14,400 | 1995 | 13,500 | 1994 | 13,200 | 1993 | 13,900 | 1992 | 13,200 | 1991 | 11,700 | 1990 | 13,000 | 1989 | 12,100 | 1988 | 11,700 | 1987 | 12,000 | 1986 | 11,800 | 1985 | 11,100 | 1984 | 10,100 | 1983 | 8,900 | 1982 | 7,400 | 1981 | 9,100 | 1980 | 9,300 | 1979 | 8,500 | 1978 | 8,600 | 1977 | 6,400 | 1976 | 14,500 | 1975 | 12,200 | 1974 | 8,000 | 1973 | 9,900 | 1972 | 8,900 | 1971 | 10,100 | 1970 | 10,500 |
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