Year | Value | 2021 | 99,415 | 2020 | 72,194 | 2019 | 119,542 | 2018 | 110,971 | 2017 | 99,263 | 2016 | 94,330 | 2015 | 83,940 | 2014 | 71,166 | 2013 | 68,131 | 2012 | 62,136 | 2011 | 57,728 | 2010 | 48,783 | 2009 | 44,154 | 2008 | 39,804 | 2007 | 37,528 | 2006 | 33,644 | 2005 | 30,961 | 2004 | 29,546 | 2003 | 27,204 | 2002 | 28,359 | 2001 | 28,128 | 2000 | 26,624 | 1999 | 24,900 | 1998 | 27,100 | 1997 | 28,100 | 1996 | 24,800 | 1995 | 26,200 | 1994 | 25,600 | 1993 | 24,200 | 1992 | 25,000 | 1991 | 20,000 | 1990 | 20,600 | 1989 | 23,600 | 1988 | 22,900 | 1987 | 24,400 | 1986 | 23,700 | 1985 | 21,600 | 1984 | 16,000 | 1983 | 14,800 | 1982 | 13,700 | 1981 | 12,000 | 1980 | 8,100 | 1979 | 8,300 | 1978 | 9,700 | 1977 | 12,300 | 1976 | 18,600 | 1975 | 16,300 | 1974 | 19,800 | 1973 | 21,600 | 1972 | 21,400 | 1971 | 20,600 | 1970 | 20,100 |
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