| Year | Value | | 2022 | 8,436,661 | | 2021 | 8,184,077 | | 2020 | 7,936,075 | | 2019 | 7,718,678 | | 2018 | 7,547,992 | | 2017 | 7,407,105 | | 2016 | 7,309,402 | | 2015 | 7,225,093 | | 2014 | 7,086,336 | | 2013 | 6,903,049 | | 2012 | 6,714,337 | | 2011 | 6,511,286 | | 2010 | 6,300,233 | | 2009 | 6,101,940 | | 2008 | 5,923,274 | | 2007 | 5,761,945 | | 2006 | 5,613,735 | | 2005 | 5,477,930 | | 2004 | 5,347,887 | | 2003 | 5,227,871 | | 2002 | 5,133,329 | | 2001 | 5,024,032 | | 2000 | 4,871,853 | | 1999 | 4,740,037 | | 1998 | 4,641,259 | | 1997 | 4,543,028 | | 1996 | 4,444,634 | | 1995 | 4,338,794 | | 1994 | 4,240,097 | | 1993 | 4,141,796 | | 1992 | 4,066,746 | | 1991 | 3,979,181 | | 1990 | 3,837,952 | | 1989 | 3,689,622 | | 1988 | 3,533,579 | | 1987 | 3,366,382 | | 1986 | 3,196,008 | | 1985 | 3,026,720 | | 1984 | 2,886,478 | | 1983 | 2,777,510 | | 1982 | 2,672,599 | | 1981 | 2,571,386 | | 1980 | 2,479,551 | | 1979 | 2,421,100 | | 1978 | 2,395,426 | | 1977 | 2,367,858 | | 1976 | 2,325,361 | | 1975 | 2,278,355 | | 1974 | 2,229,020 | | 1973 | 2,175,070 | | 1972 | 2,120,274 | | 1971 | 2,073,843 | | 1970 | 2,030,068 | | 1969 | 1,984,539 | | 1968 | 1,943,186 | | 1967 | 1,905,891 | | 1966 | 1,870,846 | | 1965 | 1,837,073 | | 1964 | 1,804,712 | | 1963 | 1,773,657 | | 1962 | 1,743,616 | | 1961 | 1,714,868 | | 1960 | 1,683,248 |
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