| Year | Value | | 2023 | 3,259,963 | | 2022 | 3,343,607 | | 2021 | 3,358,853 | | 2020 | 3,344,445 | | 2019 | 3,341,679 | | 2018 | 3,326,297 | | 2017 | 3,290,641 | | 2016 | 3,251,381 | | 2015 | 3,201,356 | | 2014 | 3,133,842 | | 2013 | 3,084,863 | | 2012 | 3,061,652 | | 2011 | 3,049,644 | | 2010 | 3,032,499 | | 2009 | 3,017,171 | | 2008 | 3,025,406 | | 2007 | 3,064,099 | | 2006 | 3,149,449 | | 2005 | 3,198,310 | | 2004 | 3,229,147 | | 2003 | 3,235,913 | | 2002 | 3,214,409 | | 2001 | 3,168,187 | | 2000 | 3,107,537 | | 1999 | 3,043,133 | | 1998 | 2,985,035 | | 1997 | 2,940,466 | | 1996 | 2,907,139 | | 1995 | 2,879,656 | | 1994 | 2,843,195 | | 1993 | 2,790,997 | | 1992 | 2,732,950 | | 1991 | 2,673,818 | | 1990 | 2,614,469 | | 1989 | 2,555,267 | | 1988 | 2,496,101 | | 1987 | 2,436,213 | | 1986 | 2,374,626 | | 1985 | 2,306,864 | | 1984 | 2,233,075 | | 1983 | 2,157,103 | | 1982 | 2,081,926 | | 1981 | 2,021,290 | | 1980 | 1,971,947 | | 1979 | 1,914,168 | | 1978 | 1,850,568 | | 1977 | 1,788,741 | | 1976 | 1,728,306 | | 1975 | 1,675,027 | | 1974 | 1,630,230 |
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