| Year | Value | | 2024 | 6,342,158 | | 2023 | 6,330,428 | | 2022 | 6,315,007 | | 2021 | 6,301,850 | | 2020 | 6,287,457 | | 2019 | 6,244,835 | | 2018 | 6,168,356 | | 2017 | 6,088,733 | | 2016 | 6,018,764 | | 2015 | 5,953,764 | | 2014 | 5,891,144 | | 2013 | 5,828,878 | | 2012 | 5,763,580 | | 2011 | 5,693,540 | | 2010 | 5,625,115 | | 2009 | 5,560,474 | | 2008 | 5,494,851 | | 2007 | 5,430,032 | | 2006 | 5,365,830 | | 2005 | 5,301,557 | | 2004 | 5,237,445 | | 2003 | 5,172,943 | | 2002 | 5,108,501 | | 2001 | 5,061,139 | | 2000 | 5,037,742 | | 1999 | 5,013,758 | | 1998 | 4,987,334 | | 1997 | 4,958,629 | | 1996 | 4,927,883 | | 1995 | 4,895,138 | | 1994 | 4,861,159 | | 1993 | 4,825,339 | | 1992 | 4,784,554 | | 1991 | 4,740,191 | | 1990 | 4,703,727 | | 1989 | 4,678,683 | | 1988 | 4,650,421 | | 1987 | 4,618,856 | | 1986 | 4,582,747 | | 1985 | 4,542,446 | | 1984 | 4,497,643 | | 1983 | 4,450,443 | | 1982 | 4,407,435 | | 1981 | 4,370,587 | | 1980 | 4,331,100 | | 1979 | 4,289,687 | | 1978 | 4,246,305 | | 1977 | 4,200,642 | | 1976 | 4,152,714 | | 1975 | 4,102,746 |
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