| Year | Value | | 2023 | 8,920,521 | | 2022 | 8,803,873 | | 2021 | 9,356,574 | | 2020 | 9,105,733 | | 2019 | 9,220,323 | | 2018 | 9,242,721 | | 2017 | 9,254,593 | | 2016 | 8,913,938 | | 2015 | 8,630,724 | | 2014 | 8,285,362 | | 2013 | 7,881,567 | | 2012 | 7,520,865 | | 2011 | 7,095,658 | | 2010 | 6,738,587 | | 2009 | 6,504,675 | | 2008 | 6,210,225 | | 2007 | 6,115,891 | | 2006 | 6,068,893 | | 2005 | 5,785,543 | | 2004 | 5,538,525 | | 2003 | 5,312,226 | | 2002 | 4,920,862 | | 2001 | 4,614,951 | | 2000 | 4,590,768 | | 1999 | 4,542,724 | | 1998 | 4,382,782 | | 1997 | 4,240,075 | | 1996 | 4,103,075 | | 1995 | 3,963,705 | | 1994 | 3,752,530 | | 1993 | 3,417,831 | | 1992 | 2,955,253 | | 1991 | 2,643,481 |
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