Year | Value | 2022 | 429,458 | 2021 | 422,993 | 2020 | 420,633 | 2019 | 421,431 | 2018 | 422,705 | 2017 | 424,044 | 2016 | 426,402 | 2015 | 430,686 | 2014 | 435,961 | 2013 | 441,627 | 2012 | 446,755 | 2011 | 449,546 | 2010 | 450,937 | 2009 | 452,818 | 2008 | 457,346 | 2007 | 464,912 | 2006 | 474,303 | 2005 | 484,531 | 2004 | 492,450 | 2003 | 495,685 | 2002 | 494,976 | 2001 | 490,476 | 2000 | 483,365 | 1999 | 477,812 | 1998 | 475,050 | 1997 | 474,446 | 1996 | 477,181 | 1995 | 481,121 | 1994 | 481,938 | 1993 | 478,804 | 1992 | 473,980 | 1991 | 467,673 | 1990 | 459,183 | 1989 | 450,399 | 1988 | 442,160 | 1987 | 433,963 | 1986 | 428,113 | 1985 | 426,384 | 1984 | 427,068 | 1983 | 429,096 | 1982 | 431,589 | 1981 | 432,244 | 1980 | 431,169 | 1979 | 432,799 | 1978 | 440,173 | 1977 | 454,987 | 1976 | 477,445 | 1975 | 503,895 | 1974 | 532,060 | 1973 | 556,146 | 1972 | 571,268 | 1971 | 578,534 | 1970 | 580,640 | 1969 | 581,106 | 1968 | 583,882 | 1967 | 588,600 | 1966 | 592,525 | 1965 | 592,838 | 1964 | 589,167 | 1963 | 583,989 | 1962 | 577,557 | 1961 | 569,645 | 1960 | 562,921 |
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