Year | Value | 2021 | 18,901,048 | 2020 | 13,285,414 | 2019 | 46,476,602 | 2018 | 12,935,505 | 2017 | 16,171,640 | 2016 | 14,724,774 | 2015 | 14,718,641 | 2014 | 15,210,489 | 2013 | 15,037,454 | 2012 | 14,518,841.052972 | 2011 | 14,088,251.664057 | 2010 | 13,493,793 | 2009 | 8,520,740 | 2008 | 9,140,680 | 2007 | 9,140,909 | 2006 | 8,785,116 | 2005 | 8,037,890 | 2004 | 7,619,372 | 2003 | 6,902,780 | 2002 | 7,070,344 | 2001 | 6,550,376 | 2000 | 6,641,875 | 1999 | 6,056,600 | 1998 | 5,871,500 | 1997 | 5,153,900 | 1996 | 4,718,600 | 1995 | 4,265,400 | 1994 | 3,747,900 | 1993 | 3,296,900 | 1992 | 3,024,200 | 1991 | 2,605,700 | 1990 | 2,532,100 | 1989 | 2,283,800 | 1988 | 1,964,600 | 1987 | 1,879,700 | 1986 | 1,640,400 | 1985 | 1,708,000 | 1984 | 1,514,000 | 1983 | 1,498,400 | 1982 | 1,447,600 | 1981 | 1,358,100 | 1980 | 1,284,500 | 1979 | 1,301,600 | 1978 | 1,238,900 | 1977 | 1,136,600 | 1976 | 1,060,800 | 1975 | 912,100 | 1974 | 840,800 | 1973 | 830,900 | 1972 | 706,600 | 1971 | 582,100 | 1970 | 511,400 |
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