Year | Value | 2021 | 1,412,026 | 2020 | 805,271.999 | 2019 | 2,609,917 | 2018 | 2,545,105 | 2017 | 2,670,560 | 2016 | 2,603,129 | 2015 | 2,597,649 | 2014 | 2,816,524 | 2013 | 2,509,003 | 2012 | 2,523,296 | 2011 | 2,151,274 | 2010 | 1,816,391.1038335 | 2009 | 1,996,982 | 2008 | 2,279,763 | 2007 | 2,536,820 | 2006 | 2,579,145 | 2005 | 2,540,564 | 2004 | 2,391,159 | 2003 | 2,182,463 | 2002 | 1,804,307 | 2001 | 1,692,334 | 2000 | 1,960,363 | 1999 | 1,624,100 | 1998 | 1,694,000 | 1997 | 1,700,600 | 1996 | 1,800,000 | 1995 | 1,698,000 | 1994 | 1,617,100 | 1993 | 1,242,500 | 1992 | 682,900 | 1991 | 577,400 | 1990 | 524,900 | 1989 | 617,800 | 1988 | 448,500 | 1987 | 444,100 | 1986 | 467,600 | 1985 | 395,000 | 1984 | 360,200 | 1983 | 265,500 | 1982 | 254,800 | 1981 | 241,800 | 1980 | 264,600 | 1979 | 257,800 | 1978 | 225,300 | 1977 | 210,600 | 1976 | 170,000 | 1975 | 160,000 | 1974 | 155,000 | 1973 | 147,000 | 1972 | 140,000 | 1971 | 146,000 | 1970 | 138,200 |
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