| Year | Value | | 2022 | 560,597 | | 2021 | 585,672 | | 2020 | 623,536 | | 2019 | 670,025 | | 2018 | 711,385 | | 2017 | 746,681 | | 2016 | 769,662 | | 2015 | 781,766 | | 2014 | 796,040 | | 2013 | 806,006 | | 2012 | 793,243 | | 2011 | 763,780 | | 2010 | 715,839 | | 2009 | 684,527 | | 2008 | 687,146 | | 2007 | 689,807 | | 2006 | 692,220 | | 2005 | 694,193 | | 2004 | 695,551 | | 2003 | 692,787 | | 2002 | 684,346 | | 2001 | 675,613 | | 2000 | 666,495 | | 1999 | 657,033 | | 1998 | 647,237 | | 1997 | 637,096 | | 1996 | 626,545 | | 1995 | 615,540 | | 1994 | 604,086 | | 1993 | 599,930 | | 1992 | 606,546 | | 1991 | 610,326 | | 1990 | 611,698 | | 1989 | 610,709 | | 1988 | 607,261 | | 1987 | 601,334 | | 1986 | 592,621 | | 1985 | 580,845 | | 1984 | 570,479 | | 1983 | 562,633 | | 1982 | 553,385 | | 1981 | 543,502 | | 1980 | 533,537 | | 1979 | 523,543 | | 1978 | 513,312 | | 1977 | 503,322 | | 1976 | 494,127 | | 1975 | 486,384 | | 1974 | 479,800 | | 1973 | 476,000 | | 1972 | 474,688 | | 1971 | 473,297 | | 1970 | 471,732 | | 1969 | 469,979 | | 1968 | 467,996 | | 1967 | 465,872 | | 1966 | 463,588 | | 1965 | 461,163 | | 1964 | 458,619 | | 1963 | 456,054 | | 1962 | 453,472 | | 1961 | 450,952 | | 1960 | 448,558 |
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