Year | Value | 2022 | 493,726 | 2021 | 500,076 | 2020 | 508,088 | 2019 | 514,405 | 2018 | 515,839 | 2017 | 513,900 | 2016 | 508,599 | 2015 | 500,729 | 2014 | 494,335 | 2013 | 491,097 | 2012 | 490,198 | 2011 | 492,143 | 2010 | 495,026 | 2009 | 495,211 | 2008 | 492,620 | 2007 | 489,797 | 2006 | 486,742 | 2005 | 482,009 | 2004 | 476,121 | 2003 | 469,611 | 2002 | 462,356 | 2001 | 456,274 | 2000 | 453,223 | 1999 | 452,081 | 1998 | 452,154 | 1997 | 453,003 | 1996 | 452,629 | 1995 | 451,696 | 1994 | 454,372 | 1993 | 462,371 | 1992 | 477,384 | 1991 | 500,023 | 1990 | 527,273 | 1989 | 556,506 | 1988 | 580,627 | 1987 | 594,709 | 1986 | 601,085 | 1985 | 603,216 | 1984 | 603,861 | 1983 | 606,476 | 1982 | 610,522 | 1981 | 613,545 | 1980 | 612,262 | 1979 | 606,255 | 1978 | 598,872 | 1977 | 591,110 | 1976 | 582,539 | 1975 | 573,468 | 1974 | 564,491 | 1973 | 556,720 | 1972 | 551,631 | 1971 | 547,122 | 1970 | 542,786 | 1969 | 541,475 | 1968 | 545,196 | 1967 | 555,776 | 1966 | 573,387 | 1965 | 575,620 | 1964 | 561,040 | 1963 | 544,021 | 1962 | 514,716 | 1961 | 472,835 | 1960 | 446,604 |
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