Year | Value | 2021 | 493,773 | 2020 | 369,019 | 2019 | 967,456 | 2018 | 935,913 | 2017 | 883,323 | 2016 | 836,293 | 2015 | 718,059 | 2014 | 658,512 | 2013 | 641,412 | 2012 | 648,817.65151064 | 2011 | 635,065 | 2010 | 601,262 | 2009 | 528,098 | 2008 | 483,741 | 2007 | 416,205 | 2006 | 350,204 | 2005 | 303,697 | 2004 | 261,345 | 2003 | 231,296 | 2002 | 177,032 | 2001 | 156,277 | 2000 | 145,457 | 1999 | 132,700 | 1998 | 122,700 | 1997 | 107,200 | 1996 | 95,000 | 1995 | 84,000 | 1994 | 70,300 | 1993 | 69,000 | 1992 | 76,700 | 1991 | 82,400 | 1990 | 79,500 | 1989 | 73,000 | 1988 | 61,400 | 1987 | 36,600 | 1986 | 33,500 | 1985 | 32,500 | 1984 | 30,800 | 1983 | 26,300 | 1982 | 26,600 | 1981 | 27,700 | 1980 | 28,400 | 1979 | 31,100 | 1978 | 27,700 | 1977 | 27,400 | 1976 | 27,100 | 1975 | 25,800 | 1974 | 27,500 | 1973 | 25,700 | 1972 | 25,200 | 1971 | 27,500 | 1970 | 29,000 |
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