| Year | Value | | 2023 | 8,690,420 | | 2022 | 8,506,619 | | 2021 | 8,416,801 | | 2020 | 9,075,516 | | 2019 | 9,289,155 | | 2018 | 9,612,402 | | 2017 | 9,348,021 | | 2016 | 9,539,923 | | 2015 | 9,724,372 | | 2014 | 9,663,752 | | 2013 | 9,609,840 | | 2012 | 9,559,748 | | 2011 | 9,500,739 | | 2010 | 9,429,718 | | 2009 | 9,413,054 | | 2008 | 9,431,657 | | 2007 | 9,452,893 | | 2006 | 9,483,090 | | 2005 | 9,529,762 | | 2004 | 9,583,760 | | 2003 | 9,638,766 | | 2002 | 9,695,624 | | 2001 | 9,716,746 | | 2000 | 9,715,086 | | 1999 | 9,735,934 | | 1998 | 9,701,159 | | 1997 | 9,581,400 | | 1996 | 9,462,147 | | 1995 | 9,361,445 | | 1994 | 9,271,547 | | 1993 | 9,191,796 | | 1992 | 9,092,261 | | 1991 | 9,046,529 |
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