| Year | Value | | 2022 | 12,821,563 | | 2021 | 12,398,421 | | 2020 | 11,991,751 | | 2019 | 11,601,062 | | 2018 | 11,233,223 | | 2017 | 10,886,153 | | 2016 | 10,554,179 | | 2015 | 10,240,842 | | 2014 | 9,939,762 | | 2013 | 9,641,675 | | 2012 | 9,347,016 | | 2011 | 9,055,358 | | 2010 | 8,772,885 | | 2009 | 8,498,269 | | 2008 | 8,230,229 | | 2007 | 7,978,901 | | 2006 | 7,736,368 | | 2005 | 7,489,885 | | 2004 | 7,236,238 | | 2003 | 6,981,948 | | 2002 | 6,743,425 | | 2001 | 6,530,589 | | 2000 | 6,345,342 | | 1999 | 6,178,229 | | 1998 | 6,014,867 | | 1997 | 5,844,064 | | 1996 | 5,666,530 | | 1995 | 5,492,650 | | 1994 | 5,339,502 | | 1993 | 5,206,125 | | 1992 | 5,079,249 | | 1991 | 4,974,998 | | 1990 | 4,893,763 | | 1989 | 4,809,539 | | 1988 | 4,724,405 | | 1987 | 4,643,190 | | 1986 | 4,561,375 | | 1985 | 4,482,263 | | 1984 | 4,401,344 | | 1983 | 4,314,080 | | 1982 | 4,227,802 | | 1981 | 4,155,865 | | 1980 | 4,097,445 | | 1979 | 4,031,165 | | 1978 | 3,948,315 | | 1977 | 3,867,016 | | 1976 | 3,789,479 | | 1975 | 3,707,384 | | 1974 | 3,624,269 | | 1973 | 3,537,258 | | 1972 | 3,448,435 | | 1971 | 3,362,091 | | 1970 | 3,277,455 | | 1969 | 3,196,669 | | 1968 | 3,122,812 | | 1967 | 3,054,799 | | 1966 | 2,989,333 | | 1965 | 2,925,075 | | 1964 | 2,861,843 | | 1963 | 2,800,647 | | 1962 | 2,740,830 | | 1961 | 2,681,936 | | 1960 | 2,623,481 |
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