| Year | Value | | 2023 | 14,786,861 | | 2022 | 14,062,698 | | 2021 | 13,496,452 | | 2020 | 12,886,752 | | 2019 | 12,193,809 | | 2018 | 11,628,517 | | 2017 | 11,219,858 | | 2016 | 10,855,602 | | 2015 | 10,547,509 | | 2014 | 10,296,433 | | 2013 | 10,097,508 | | 2012 | 9,928,000 | | 2011 | 9,752,588 | | 2010 | 9,550,058 | | 2009 | 9,318,556 | | 2008 | 9,055,388 | | 2007 | 8,769,382 | | 2006 | 8,488,448 | | 2005 | 8,226,998 | | 2004 | 7,976,033 | | 2003 | 7,725,061 | | 2002 | 7,477,412 | | 2001 | 7,237,050 | | 2000 | 7,005,762 | | 1999 | 6,783,988 | | 1998 | 6,573,117 | | 1997 | 6,374,539 | | 1996 | 6,187,692 | | 1995 | 6,011,764 | | 1994 | 5,847,064 | | 1993 | 5,694,201 | | 1992 | 5,549,746 | | 1991 | 5,408,361 | | 1990 | 5,267,847 | | 1989 | 5,128,818 | | 1988 | 4,990,642 | | 1987 | 4,855,760 | | 1986 | 4,731,139 | | 1985 | 4,619,694 | | 1984 | 4,520,248 | | 1983 | 4,434,466 | | 1982 | 4,354,915 | | 1981 | 4,261,971 | | 1980 | 4,144,094 | | 1979 | 4,001,149 | | 1978 | 3,828,310 | | 1977 | 3,637,884 | | 1976 | 3,464,170 | | 1975 | 3,330,170 | | 1974 | 3,238,629 |
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