| Year | Value | | 2024 | 5,265,581 | | 2023 | 5,251,815 | | 2022 | 5,243,597 | | 2021 | 5,237,221 | | 2020 | 5,220,451 | | 2019 | 5,189,063 | | 2018 | 5,144,615 | | 2017 | 5,090,665 | | 2016 | 5,030,645 | | 2015 | 4,958,585 | | 2014 | 4,874,466 | | 2013 | 4,782,537 | | 2012 | 4,689,774 | | 2011 | 4,593,165 | | 2010 | 4,490,509 | | 2009 | 4,395,666 | | 2008 | 4,314,592 | | 2007 | 4,241,489 | | 2006 | 4,179,647 | | 2005 | 4,137,393 | | 2004 | 4,106,872 | | 2003 | 4,080,702 | | 2002 | 4,054,269 | | 2001 | 4,023,441 | | 2000 | 3,985,312 | | 1999 | 3,947,224 | | 1998 | 3,904,120 | | 1997 | 3,841,101 | | 1996 | 3,761,410 | | 1995 | 3,672,971 | | 1994 | 3,578,358 | | 1993 | 3,476,888 | | 1992 | 3,372,110 | | 1991 | 3,267,633 | | 1990 | 3,169,395 | | 1989 | 3,099,620 | | 1988 | 3,048,945 | | 1987 | 2,991,925 | | 1986 | 2,930,710 | | 1985 | 2,865,869 | | 1984 | 2,796,237 | | 1983 | 2,720,363 | | 1982 | 2,638,818 | | 1981 | 2,553,079 | | 1980 | 2,467,368 | | 1979 | 2,388,323 | | 1978 | 2,316,955 | | 1977 | 2,244,411 | | 1976 | 2,165,616 | | 1975 | 2,085,687 |
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