| Year | Value | | 2022 | 11,659,620 | | 2021 | 11,882,725 | | 2020 | 12,118,334 | | 2019 | 12,152,231 | | 2018 | 12,155,066 | | 2017 | 12,128,330 | | 2016 | 12,055,039 | | 2015 | 11,914,289 | | 2014 | 11,744,779 | | 2013 | 11,539,612 | | 2012 | 11,265,868 | | 2011 | 11,118,083 | | 2010 | 10,862,197 | | 2009 | 10,345,966 | | 2008 | 9,957,438 | | 2007 | 9,740,292 | | 2006 | 9,409,167 | | 2005 | 9,024,192 | | 2004 | 8,745,174 | | 2003 | 8,430,393 | | 2002 | 8,057,847 | | 2001 | 7,552,561 | | 2000 | 7,181,862 | | 1999 | 6,992,636 | | 1998 | 6,734,788 | | 1997 | 6,452,221 | | 1996 | 6,318,880 | | 1995 | 6,203,622 | | 1994 | 6,018,671 | | 1993 | 5,940,477 | | 1992 | 5,933,501 | | 1991 | 5,937,997 | | 1990 | 6,036,328 | | 1989 | 6,288,089 | | 1988 | 6,455,056 | | 1987 | 6,513,202 | | 1986 | 6,544,459 | | 1985 | 6,419,786 | | 1984 | 6,156,439 | | 1983 | 6,059,592 | | 1982 | 6,065,473 | | 1981 | 5,962,863 | | 1980 | 5,975,326 | | 1979 | 6,111,795 | | 1978 | 6,001,610 | | 1977 | 5,738,927 | | 1976 | 5,623,180 | | 1975 | 5,498,012 | | 1974 | 5,304,377 | | 1973 | 5,210,022 | | 1972 | 5,247,983 | | 1971 | 5,283,390 | | 1970 | 5,279,839 | | 1969 | 5,265,758 | | 1968 | 5,245,513 | | 1967 | 5,207,537 | | 1966 | 5,102,375 | | 1965 | 5,001,816 | | 1964 | 4,926,725 | | 1963 | 4,783,943 | | 1962 | 4,669,634 | | 1961 | 4,596,473 | | 1960 | 4,478,064 |
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