| Year | Value | | 2024 | 4,436,413 | | 2023 | 4,346,653 | | 2022 | 4,269,852 | | 2021 | 4,267,515 | | 2020 | 4,316,810 | | 2019 | 4,325,774 | | 2018 | 4,303,487 | | 2017 | 4,255,014 | | 2016 | 4,157,324 | | 2015 | 4,030,647 | | 2014 | 3,917,815 | | 2013 | 3,816,413 | | 2012 | 3,724,422 | | 2011 | 3,643,181 | | 2010 | 3,571,912 | | 2009 | 3,500,881 | | 2008 | 3,421,370 | | 2007 | 3,333,184 | | 2006 | 3,237,587 | | 2005 | 3,137,497 | | 2004 | 3,034,830 | | 2003 | 2,928,610 | | 2002 | 2,817,840 | | 2001 | 2,704,242 | | 2000 | 2,594,126 | | 1999 | 2,477,478 | | 1998 | 2,360,180 | | 1997 | 2,270,208 | | 1996 | 2,205,440 | | 1995 | 2,155,309 | | 1994 | 2,125,728 | | 1993 | 2,108,473 | | 1992 | 2,077,306 | | 1991 | 2,028,813 | | 1990 | 1,973,446 | | 1989 | 1,917,184 | | 1988 | 1,863,708 | | 1987 | 1,813,360 | | 1986 | 1,764,927 | | 1985 | 1,717,744 | | 1984 | 1,671,959 | | 1983 | 1,627,441 | | 1982 | 1,584,532 | | 1981 | 1,546,471 | | 1980 | 1,517,308 | | 1979 | 1,493,386 | | 1978 | 1,469,342 | | 1977 | 1,444,936 | | 1976 | 1,420,207 | | 1975 | 1,395,189 |
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