| Year | Value | | 2022 | 8,280,469 | | 2021 | 8,083,764 | | 2020 | 7,900,294 | | 2019 | 7,732,333 | | 2018 | 7,557,496 | | 2017 | 7,355,392 | | 2016 | 7,117,781 | | 2015 | 6,867,904 | | 2014 | 6,630,080 | | 2013 | 6,402,845 | | 2012 | 6,179,246 | | 2011 | 5,957,588 | | 2010 | 5,738,848 | | 2009 | 5,503,626 | | 2008 | 5,268,551 | | 2007 | 5,030,867 | | 2006 | 4,782,785 | | 2005 | 4,539,474 | | 2004 | 4,307,686 | | 2003 | 4,085,546 | | 2002 | 3,865,732 | | 2001 | 3,657,861 | | 2000 | 3,456,462 | | 1999 | 3,287,109 | | 1998 | 3,149,923 | | 1997 | 3,006,919 | | 1996 | 2,858,781 | | 1995 | 2,716,645 | | 1994 | 2,578,624 | | 1993 | 2,437,866 | | 1992 | 2,296,629 | | 1991 | 2,155,241 | | 1990 | 2,023,907 | | 1989 | 1,897,909 | | 1988 | 1,777,436 | | 1987 | 1,663,818 | | 1986 | 1,563,583 | | 1985 | 1,479,907 | | 1984 | 1,398,510 | | 1983 | 1,318,499 | | 1982 | 1,233,573 | | 1981 | 1,150,315 | | 1980 | 1,076,035 | | 1979 | 1,009,318 | | 1978 | 948,075 | | 1977 | 892,226 | | 1976 | 843,795 | | 1975 | 801,558 | | 1974 | 764,349 | | 1973 | 734,776 | | 1972 | 704,411 | | 1971 | 673,872 | | 1970 | 642,111 | | 1969 | 614,181 | | 1968 | 585,121 | | 1967 | 560,228 | | 1966 | 540,883 | | 1965 | 529,010 | | 1964 | 515,204 | | 1963 | 495,850 | | 1962 | 477,931 | | 1961 | 462,277 | | 1960 | 446,069 |
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