Year | Value | 2021 | 529,115 | 2020 | 393,769 | 2019 | 814,301 | 2018 | 832,683 | 2017 | 803,846 | 2016 | 826,943 | 2015 | 944,557 | 2014 | 937,437 | 2013 | 952,307 | 2012 | 1,002,565 | 2011 | 970,561 | 2010 | 841,793 | 2009 | 752,225 | 2008 | 647,753 | 2007 | 649,738 | 2006 | 560,838 | 2005 | 514,700 | 2004 | 486,025 | 2003 | 486,777 | 2002 | 627,878 | 2001 | 654,106 | 2000 | 628,081 | 1999 | 692,600 | 1998 | 609,900 | 1997 | 568,600 | 1996 | 483,600 | 1995 | 453,500 | 1994 | 408,300 | 1993 | 400,100 | 1992 | 405,500 | 1991 | 457,700 | 1990 | 415,900 | 1989 | 398,700 | 1988 | 401,900 | 1987 | 386,200 | 1986 | 367,900 | 1985 | 335,100 | 1984 | 337,100 | 1983 | 259,900 | 1982 | 240,200 | 1981 | 236,900 | 1980 | 232,500 | 1979 | 211,100 | 1978 | 193,000 | 1977 | 194,900 | 1976 | 206,100 | 1975 | 209,100 | 1974 | 204,800 | 1973 | 173,200 | 1972 | 156,700 | 1971 | 149,300 | 1970 | 137,700 |
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