Year | Value | 2022 | 535,512 | 2021 | 519,650 | 2020 | 519,164 | 2019 | 522,070 | 2018 | 528,457 | 2017 | 535,621 | 2016 | 541,514 | 2015 | 545,156 | 2014 | 547,853 | 2013 | 550,128 | 2012 | 555,033 | 2011 | 566,238 | 2010 | 587,763 | 2009 | 624,286 | 2008 | 673,433 | 2007 | 733,559 | 2006 | 790,609 | 2005 | 828,677 | 2004 | 844,796 | 2003 | 842,218 | 2002 | 834,316 | 2001 | 835,818 | 2000 | 847,340 | 1999 | 864,080 | 1998 | 891,913 | 1997 | 926,488 | 1996 | 954,768 | 1995 | 973,347 | 1994 | 989,914 | 1993 | 995,274 | 1992 | 984,441 | 1991 | 969,090 | 1990 | 958,831 | 1989 | 961,717 | 1988 | 997,826 | 1987 | 1,059,400 | 1986 | 1,064,991 | 1985 | 1,006,607 | 1984 | 931,226 | 1983 | 836,459 | 1982 | 730,438 | 1981 | 676,648 | 1980 | 675,493 | 1979 | 669,706 | 1978 | 658,826 | 1977 | 656,616 | 1976 | 698,769 | 1975 | 768,097 | 1974 | 822,417 | 1973 | 863,284 | 1972 | 891,195 | 1971 | 903,411 | 1970 | 905,521 | 1969 | 905,469 | 1968 | 895,481 | 1967 | 867,224 | 1966 | 825,368 | 1965 | 782,270 | 1964 | 740,705 | 1963 | 704,505 | 1962 | 680,641 | 1961 | 674,399 | 1960 | 684,703 |
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