| Year | Value | | 2022 | 11,033,499 | | 2021 | 10,827,136 | | 2020 | 10,617,452 | | 2019 | 10,408,889 | | 2018 | 10,204,026 | | 2017 | 9,995,789 | | 2016 | 9,785,059 | | 2015 | 9,570,861 | | 2014 | 9,352,079 | | 2013 | 9,129,035 | | 2012 | 8,909,792 | | 2011 | 8,725,322 | | 2010 | 8,577,481 | | 2009 | 8,447,543 | | 2008 | 8,338,451 | | 2007 | 8,249,373 | | 2006 | 8,147,248 | | 2005 | 8,054,890 | | 2004 | 7,990,428 | | 2003 | 7,912,203 | | 2002 | 7,839,755 | | 2001 | 7,840,997 | | 2000 | 7,839,526 | | 1999 | 7,809,368 | | 1998 | 7,744,448 | | 1997 | 7,665,757 | | 1996 | 7,586,401 | | 1995 | 7,505,412 | | 1994 | 7,456,054 | | 1993 | 7,454,970 | | 1992 | 7,395,950 | | 1991 | 7,291,660 | | 1990 | 7,182,078 | | 1989 | 7,064,753 | | 1988 | 6,935,039 | | 1987 | 6,790,286 | | 1986 | 6,638,020 | | 1985 | 6,481,908 | | 1984 | 6,321,097 | | 1983 | 6,155,237 | | 1982 | 5,975,490 | | 1981 | 5,787,907 | | 1980 | 5,472,787 | | 1979 | 5,201,334 | | 1978 | 5,151,390 | | 1977 | 5,107,842 | | 1976 | 5,008,323 | | 1975 | 4,885,410 | | 1974 | 4,758,245 | | 1973 | 4,634,495 | | 1972 | 4,517,012 | | 1971 | 4,405,784 | | 1970 | 4,299,587 | | 1969 | 4,192,708 | | 1968 | 4,089,579 | | 1967 | 3,990,069 | | 1966 | 3,892,679 | | 1965 | 3,796,976 | | 1964 | 3,702,920 | | 1963 | 3,610,652 | | 1962 | 3,519,986 | | 1961 | 3,422,606 | | 1960 | 3,326,410 |
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