| Year | Value | | 2021 | 6,315,893.499 | | 2020 | 6,395,637.389 | | 2019 | 10,575,048 | | 2018 | 10,258,516.84149 | | 2017 | 9,792,841.59 | | 2016 | 9,231,486 | | 2015 | 8,575,632 | | 2014 | 8,025,736.2493602 | | 2013 | 7,391,410.0459955 | | 2012 | 6,896,897.7004584 | | 2011 | 6,627,354.954969 | | 2010 | 6,334,923.9524487 | | 2009 | 4,885,072 | | 2008 | 4,597,611 | | 2007 | 4,441,653 | | 2006 | 4,174,539 | | 2005 | 3,879,996 | | 2004 | 3,681,701 | | 2003 | 3,421,353 | | 2002 | 3,472,124 | | 2001 | 3,230,312 | | 2000 | 2,884,999 | | 1999 | 2,784,900.0009766 | | 1998 | 3,010,400 | | 1997 | 2,976,700 | | 1996 | 2,898,700 | | 1995 | 2,644,000 | | 1994 | 2,467,300 | | 1993 | 2,236,200 | | 1992 | 2,142,700 | | 1991 | 1,996,000 | | 1990 | 1,819,300 | | 1989 | 1,745,100 | | 1988 | 1,744,300 | | 1987 | 1,618,700 | | 1986 | 1,518,900 | | 1985 | 1,440,800 | | 1984 | 1,393,400 | | 1983 | 1,289,200 | | 1982 | 1,262,800 | | 1981 | 1,250,500 | | 1980 | 1,232,000 | | 1979 | 1,222,500 | | 1978 | 1,147,700 | | 1977 | 1,094,900 | | 1976 | 853,800 | | 1975 | 823,000 | | 1974 | 804,900 |
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