| Year | Value | | 2023 | 12,008,094 | | 2022 | 11,650,868 | | 2021 | 10,749,021 | | 2020 | 9,984,717 | | 2019 | 10,971,133 | | 2018 | 10,737,550 | | 2017 | 10,382,586 | | 2016 | 9,863,485 | | 2015 | 9,401,511 | | 2014 | 8,859,484 | | 2013 | 8,825,953 | | 2012 | 8,301,256 | | 2011 | 7,950,330 | | 2010 | 7,468,929 | | 2009 | 6,899,682 | | 2008 | 6,370,031 | | 2007 | 6,031,549 | | 2006 | 5,983,068 | | 2005 | 5,809,937 | | 2004 | 5,720,063 | | 2003 | 6,447,639 | | 2002 | 6,643,828 | | 2001 | 6,334,024 | | 2000 | 6,073,118 | | 1999 | 6,709,922 | | 1998 | 6,397,385 | | 1997 | 6,150,219 | | 1996 | 6,366,026 | | 1995 | 6,277,532 | | 1994 | 6,188,005 | | 1993 | 5,160,609 | | 1992 | 6,150,844 | | 1991 | 6,255,430 | | 1990 | 6,084,841 |
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