Year | Value | 2022 | 516,847 | 2021 | 551,702 | 2020 | 579,515 | 2019 | 599,810 | 2018 | 608,568 | 2017 | 611,125 | 2016 | 608,272 | 2015 | 601,027 | 2014 | 596,783 | 2013 | 590,595 | 2012 | 574,511 | 2011 | 554,688 | 2010 | 524,581 | 2009 | 487,849 | 2008 | 460,880 | 2007 | 448,658 | 2006 | 443,919 | 2005 | 447,733 | 2004 | 463,441 | 2003 | 483,409 | 2002 | 506,452 | 2001 | 535,815 | 2000 | 558,813 | 1999 | 565,230 | 1998 | 565,639 | 1997 | 568,624 | 1996 | 570,305 | 1995 | 571,635 | 1994 | 574,966 | 1993 | 578,118 | 1992 | 575,337 | 1991 | 574,364 | 1990 | 575,465 | 1989 | 570,553 | 1988 | 561,555 | 1987 | 547,612 | 1986 | 531,305 | 1985 | 505,844 | 1984 | 473,715 | 1983 | 425,303 | 1982 | 363,153 | 1981 | 315,934 | 1980 | 293,499 | 1979 | 292,280 | 1978 | 325,301 | 1977 | 384,128 | 1976 | 431,434 | 1975 | 457,528 | 1974 | 468,269 | 1973 | 468,744 | 1972 | 462,965 | 1971 | 454,161 | 1970 | 445,006 | 1969 | 435,662 | 1968 | 427,077 | 1967 | 415,896 | 1966 | 400,977 | 1965 | 386,382 | 1964 | 371,680 | 1963 | 356,537 | 1962 | 341,326 | 1961 | 325,627 | 1960 | 310,252 |
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