| Year | Value | | 2022 | 6,762,508 | | 2021 | 8,316,369 | | 2020 | 8,327,779 | | 2019 | 8,476,897 | | 2018 | 7,218,705 | | 2017 | 8,225,309 | | 2016 | 8,483,364 | | 2015 | 8,158,698 | | 2014 | 7,952,805 | | 2013 | 7,738,401 | | 2012 | 7,322,041 | | 2011 | 7,534,114 | | 2010 | 7,935,923 | | 2009 | 7,646,708 | | 2008 | 7,108,319 | | 2007 | 6,437,567 | | 2006 | 5,593,660 | | 2005 | 4,361,812 | | 2004 | 3,675,512 | | 2003 | 2,837,910 | | 2002 | 2,053,418 | | 2001 | 1,220,489 | | 2000 | 720,054 | | 1999 | 261,905 | | 1998 | 142,649 | | 1997 | 108,633 | | 1996 | 85,516 | | 1995 | 66,297 | | 1994 | 36,161 | | 1993 | 23,733 | | 1992 | 13,393 | | 1991 | 5,526 | | 1990 | 2,072 |
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