Year | Value | 2021 | 1,603,134 | 2020 | 1,077,762 | 2019 | 3,164,358 | 2018 | 2,981,937 | 2017 | 2,879,528 | 2016 | 2,647,258 | 2015 | 2,591,297 | 2014 | 2,419,476 | 2013 | 2,241,480 | 2012 | 2,148,669 | 2011 | 2,029,610 | 2010 | 1,893,359 | 2009 | 1,308,382 | 2008 | 1,067,774 | 2007 | 1,074,219 | 2006 | 968,820 | 2005 | 1,076,258 | 2004 | 1,086,730 | 2003 | 935,213 | 2002 | 874,152 | 2001 | 815,862 | 2000 | 805,803 | 1999 | 719,400 | 1998 | 716,000 | 1997 | 856,900 | 1996 | 774,600 | 1995 | 769,800 | 1994 | 706,400 | 1993 | 677,400 | 1992 | 599,600 | 1991 | 535,500 | 1990 | 572,300 | 1989 | 182,600 | 1988 | 493,200 | 1987 | 353,300 | 1986 | 498,700 | 1985 | 501,300 | 1984 | 410,700 | 1983 | 695,800 | 1982 | 571,000 | 1981 | 843,800 | 1980 | 930,300 | 1979 | 904,000 | 1978 | 862,900 | 1977 | 928,500 | 1976 | 1,050,000 | 1975 | 900,000 | 1974 | 1,037,300 | 1973 | 819,000 | 1972 | 743,800 | 1971 | 648,000 | 1970 | 548,600 |
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