Year | Value | 2021 | 2,449,339 | 2020 | 7,801,490 | 2019 | 27,760,301 | 2018 | 27,243,741 | 2017 | 26,288,001 | 2016 | 29,120,041 | 2015 | 28,603,919 | 2014 | 27,193,939 | 2013 | 27,846,220 | 2012 | 31,072,962.155732 | 2011 | 33,923,370.505106 | 2010 | 32,645,164 | 2009 | 33,194,501 | 2008 | 30,672,048 | 2007 | 37,830,745 | 2006 | 36,709,131 | 2005 | 36,115,764 | 2004 | 35,922,093 | 2003 | 36,345,771 | 2002 | 28,244,627 | 2001 | 31,031,074 | 2000 | 30,418,137 | 1999 | 28,281,000 | 1998 | 27,462,700 | 1997 | 28,183,900 | 1996 | 25,838,500 | 1995 | 23,665,800 | 1994 | 22,959,300 | 1993 | 21,901,400 | 1992 | 21,766,700 | 1991 | 18,846,800 | 1990 | 19,750,000 | 1989 | 17,437,700 | 1988 | 15,649,200 | 1987 | 15,268,100 | 1986 | 13,811,100 | 1985 | 14,408,000 | 1984 | 12,593,600 | 1983 | 11,996,600 | 1982 | 11,611,000 | 1981 | 10,493,300 | 1980 | 9,955,800 | 1979 | 9,462,500 | 1978 | 9,507,000 | 1977 | 9,424,100 | 1976 | 8,238,100 | 1975 | 8,360,600 | 1974 | 8,631,400 | 1973 | 8,189,900 | 1972 | 7,462,200 | 1971 | 7,644,100 | 1970 | 6,743,700 |
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