Year | Value | 2022 | 544,450 | 2021 | 532,629 | 2020 | 526,597 | 2019 | 521,623 | 2018 | 516,963 | 2017 | 513,332 | 2016 | 508,621 | 2015 | 503,871 | 2014 | 503,609 | 2013 | 510,080 | 2012 | 524,560 | 2011 | 547,316 | 2010 | 575,703 | 2009 | 606,447 | 2008 | 632,232 | 2007 | 649,170 | 2006 | 659,361 | 2005 | 665,247 | 2004 | 668,724 | 2003 | 672,818 | 2002 | 676,674 | 2001 | 677,384 | 2000 | 673,334 | 1999 | 664,692 | 1998 | 653,910 | 1997 | 643,043 | 1996 | 632,644 | 1995 | 622,845 | 1994 | 613,393 | 1993 | 604,441 | 1992 | 597,816 | 1991 | 592,039 | 1990 | 587,047 | 1989 | 585,696 | 1988 | 589,350 | 1987 | 598,714 | 1986 | 615,155 | 1985 | 616,875 | 1984 | 601,186 | 1983 | 582,375 | 1982 | 551,714 | 1981 | 508,855 | 1980 | 480,413 | 1979 | 467,367 | 1978 | 452,200 | 1977 | 440,363 | 1976 | 431,824 | 1975 | 422,562 | 1974 | 412,704 | 1973 | 404,756 | 1972 | 400,363 | 1971 | 398,371 | 1970 | 396,947 | 1969 | 395,571 | 1968 | 393,446 | 1967 | 390,104 | 1966 | 384,991 | 1965 | 379,117 | 1964 | 374,541 | 1963 | 373,732 | 1962 | 374,002 | 1961 | 374,584 | 1960 | 377,210 |
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