| Year | Value | | 2022 | 13,170,810 | | 2021 | 12,792,826 | | 2020 | 12,437,523 | | 2019 | 12,103,936 | | 2018 | 11,741,534 | | 2017 | 11,354,390 | | 2016 | 10,947,295 | | 2015 | 10,496,720 | | 2014 | 10,031,659 | | 2013 | 9,535,274 | | 2012 | 9,058,557 | | 2011 | 8,646,128 | | 2010 | 8,235,841 | | 2009 | 7,827,024 | | 2008 | 7,426,555 | | 2007 | 7,025,952 | | 2006 | 6,663,618 | | 2005 | 6,295,497 | | 2004 | 5,896,480 | | 2003 | 5,525,279 | | 2002 | 5,201,959 | | 2001 | 4,894,832 | | 2000 | 4,593,161 | | 1999 | 4,316,721 | | 1998 | 4,080,403 | | 1997 | 3,856,940 | | 1996 | 3,630,879 | | 1995 | 3,406,463 | | 1994 | 3,171,522 | | 1993 | 2,940,679 | | 1992 | 2,748,276 | | 1991 | 2,595,031 | | 1990 | 2,459,144 | | 1989 | 2,321,382 | | 1988 | 2,185,116 | | 1987 | 2,065,045 | | 1986 | 1,952,205 | | 1985 | 1,837,953 | | 1984 | 1,725,197 | | 1983 | 1,609,018 | | 1982 | 1,494,476 | | 1981 | 1,390,128 | | 1980 | 1,298,794 | | 1979 | 1,225,703 | | 1978 | 1,159,166 | | 1977 | 1,090,623 | | 1976 | 1,028,961 | | 1975 | 972,712 | | 1974 | 919,512 | | 1973 | 868,246 | | 1972 | 821,431 | | 1971 | 788,282 | | 1970 | 767,733 | | 1969 | 747,790 | | 1968 | 722,974 | | 1967 | 700,517 | | 1966 | 686,046 | | 1965 | 682,126 | | 1964 | 690,002 | | 1963 | 700,624 | | 1962 | 706,100 | | 1961 | 723,818 | | 1960 | 771,035 |
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