Year | Value | 2022 | 536,737 | 2021 | 526,530 | 2020 | 521,753 | 2019 | 518,293 | 2018 | 515,307 | 2017 | 513,215 | 2016 | 509,452 | 2015 | 505,233 | 2014 | 505,504 | 2013 | 512,144 | 2012 | 526,468 | 2011 | 548,511 | 2010 | 574,989 | 2009 | 602,562 | 2008 | 624,394 | 2007 | 636,976 | 2006 | 643,003 | 2005 | 645,312 | 2004 | 645,911 | 2003 | 647,887 | 2002 | 650,613 | 2001 | 651,437 | 2000 | 648,371 | 1999 | 641,187 | 1998 | 631,996 | 1997 | 622,299 | 1996 | 612,448 | 1995 | 603,417 | 1994 | 594,589 | 1993 | 585,450 | 1992 | 578,067 | 1991 | 571,061 | 1990 | 564,248 | 1989 | 560,722 | 1988 | 561,855 | 1987 | 568,761 | 1986 | 582,719 | 1985 | 582,457 | 1984 | 565,925 | 1983 | 546,722 | 1982 | 515,732 | 1981 | 473,074 | 1980 | 444,996 | 1979 | 432,289 | 1978 | 418,027 | 1977 | 407,480 | 1976 | 400,563 | 1975 | 392,883 | 1974 | 384,494 | 1973 | 378,326 | 1972 | 376,211 | 1971 | 376,951 | 1970 | 378,443 | 1969 | 380,243 | 1968 | 381,938 | 1967 | 382,367 | 1966 | 380,819 | 1965 | 378,936 | 1964 | 378,518 | 1963 | 380,937 | 1962 | 383,509 | 1961 | 385,999 | 1960 | 389,747 |
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