| Year | Value | | 2022 | 10,290,332 | | 2021 | 10,083,115 | | 2020 | 9,442,905 | | 2019 | 8,505,981 | | 2018 | 7,578,723 | | 2017 | 6,905,543 | | 2016 | 6,639,886 | | 2015 | 6,930,056 | | 2014 | 7,653,033 | | 2013 | 8,557,284 | | 2012 | 9,408,922 | | 2011 | 9,845,666 | | 2010 | 9,834,370 | | 2009 | 9,508,440 | | 2008 | 8,947,128 | | 2007 | 8,414,250 | | 2006 | 8,088,706 | | 2005 | 8,058,629 | | 2004 | 8,302,855 | | 2003 | 8,717,942 | | 2002 | 9,052,460 | | 2001 | 9,242,509 | | 2000 | 9,301,729 | | 1999 | 9,214,823 | | 1998 | 9,007,730 | | 1997 | 8,665,505 | | 1996 | 8,218,797 | | 1995 | 7,682,836 | | 1994 | 7,147,383 | | 1993 | 6,636,948 | | 1992 | 6,133,535 | | 1991 | 5,743,772 | | 1990 | 5,600,344 | | 1989 | 5,731,714 | | 1988 | 6,014,458 | | 1987 | 6,484,208 | | 1986 | 7,021,834 | | 1985 | 7,372,258 | | 1984 | 7,444,420 | | 1983 | 7,339,610 | | 1982 | 7,171,477 | | 1981 | 6,966,788 | | 1980 | 6,796,777 | | 1979 | 6,636,444 | | 1978 | 6,485,622 | | 1977 | 6,324,802 | | 1976 | 6,159,744 | | 1975 | 5,988,672 | | 1974 | 5,780,351 | | 1973 | 5,506,997 | | 1972 | 5,227,962 | | 1971 | 4,959,610 | | 1970 | 4,706,354 | | 1969 | 4,504,749 | | 1968 | 4,339,147 | | 1967 | 4,188,242 | | 1966 | 4,026,208 | | 1965 | 3,870,589 | | 1964 | 3,728,804 | | 1963 | 3,672,312 | | 1962 | 3,638,452 | | 1961 | 3,570,213 | | 1960 | 3,505,353 |
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