| Year | Value | | 2021 | 7,654,067.471 | | 2020 | 6,822,810.569 | | 2019 | 11,473,616 | | 2018 | 11,210,514.747865 | | 2017 | 10,607,861.05 | | 2016 | 9,987,135 | | 2015 | 9,540,860 | | 2014 | 8,972,796.5398549 | | 2013 | 8,273,185.2860701 | | 2012 | 7,646,490.6610646 | | 2011 | 7,110,341.7165204 | | 2010 | 6,591,109.2080717 | | 2009 | 5,322,770 | | 2008 | 5,004,732 | | 2007 | 4,897,836 | | 2006 | 4,470,067 | | 2005 | 4,147,455 | | 2004 | 3,915,786 | | 2003 | 3,348,461 | | 2002 | 3,471,728 | | 2001 | 3,470,459 | | 2000 | 3,172,289 | | 1999 | 3,248,200 | | 1998 | 3,123,000 | | 1997 | 3,138,900 | | 1996 | 3,088,200 | | 1995 | 2,995,000 | | 1994 | 2,964,300 | | 1993 | 2,923,000 | | 1992 | 1,904,600 | | 1991 | 1,815,000 | | 1990 | 1,808,800 | | 1989 | 1,680,400 | | 1988 | 1,674,800 | | 1987 | 1,643,100 | | 1986 | 1,555,200 | | 1985 | 1,527,200 | | 1984 | 1,524,300 | | 1983 | 1,415,800 | | 1982 | 1,317,500 | | 1981 | 1,216,300 | | 1980 | 1,197,800 | | 1979 | 1,111,900 | | 1978 | 1,021,400 | | 1977 | 992,900 | | 1976 | 1,001,400 | | 1975 | 948,400 | | 1974 | 911,400 |
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