| Year | Value | | 2022 | 12,327,741 | | 2021 | 12,118,494 | | 2020 | 11,904,776 | | 2019 | 11,695,460 | | 2018 | 11,490,927 | | 2017 | 11,283,238 | | 2016 | 11,073,642 | | 2015 | 10,869,374 | | 2014 | 10,672,205 | | 2013 | 10,474,824 | | 2012 | 10,305,330 | | 2011 | 10,137,272 | | 2010 | 9,938,831 | | 2009 | 9,741,147 | | 2008 | 9,545,096 | | 2007 | 9,348,036 | | 2006 | 9,150,660 | | 2005 | 8,954,866 | | 2004 | 8,760,621 | | 2003 | 8,572,004 | | 2002 | 8,390,050 | | 2001 | 8,215,827 | | 2000 | 8,052,142 | | 1999 | 7,898,881 | | 1998 | 7,758,469 | | 1997 | 7,620,923 | | 1996 | 7,500,143 | | 1995 | 7,389,330 | | 1994 | 7,277,147 | | 1993 | 7,165,627 | | 1992 | 7,058,717 | | 1991 | 6,956,935 | | 1990 | 6,858,867 | | 1989 | 6,764,936 | | 1988 | 6,680,093 | | 1987 | 6,604,129 | | 1986 | 6,538,651 | | 1985 | 6,467,180 | | 1984 | 6,384,892 | | 1983 | 6,293,357 | | 1982 | 6,198,178 | | 1981 | 6,103,880 | | 1980 | 6,009,833 | | 1979 | 5,918,320 | | 1978 | 5,832,345 | | 1977 | 5,750,573 | | 1976 | 5,674,107 | | 1975 | 5,601,009 | | 1974 | 5,528,372 | | 1973 | 5,457,662 | | 1972 | 5,390,514 | | 1971 | 5,329,627 | | 1970 | 5,271,778 | | 1969 | 5,214,875 | | 1968 | 5,160,195 | | 1967 | 5,106,858 | | 1966 | 5,055,318 | | 1965 | 5,004,400 | | 1964 | 4,953,543 | | 1963 | 4,903,678 | | 1962 | 4,854,036 | | 1961 | 4,804,453 | | 1960 | 4,755,116 |
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