Year | Value | 2022 | 450,809 | 2021 | 444,250 | 2020 | 441,975 | 2019 | 442,818 | 2018 | 444,301 | 2017 | 445,867 | 2016 | 448,143 | 2015 | 452,176 | 2014 | 457,388 | 2013 | 463,272 | 2012 | 468,304 | 2011 | 470,938 | 2010 | 472,614 | 2009 | 474,770 | 2008 | 479,496 | 2007 | 487,753 | 2006 | 497,851 | 2005 | 508,337 | 2004 | 516,647 | 2003 | 520,041 | 2002 | 518,815 | 2001 | 513,974 | 2000 | 506,818 | 1999 | 501,003 | 1998 | 497,959 | 1997 | 497,485 | 1996 | 500,304 | 1995 | 504,183 | 1994 | 504,654 | 1993 | 500,874 | 1992 | 495,590 | 1991 | 488,534 | 1990 | 479,053 | 1989 | 469,903 | 1988 | 461,656 | 1987 | 453,113 | 1986 | 447,226 | 1985 | 445,887 | 1984 | 446,779 | 1983 | 449,004 | 1982 | 451,897 | 1981 | 453,104 | 1980 | 452,422 | 1979 | 454,283 | 1978 | 461,929 | 1977 | 477,020 | 1976 | 500,081 | 1975 | 527,571 | 1974 | 557,034 | 1973 | 582,227 | 1972 | 598,253 | 1971 | 606,180 | 1970 | 608,783 | 1969 | 609,855 | 1968 | 613,322 | 1967 | 618,380 | 1966 | 622,101 | 1965 | 622,015 | 1964 | 617,693 | 1963 | 611,965 | 1962 | 605,439 | 1961 | 597,748 | 1960 | 591,144 |
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