| Year | Value | | 2023 | 9,334,287 | | 2022 | 9,014,388 | | 2021 | 8,693,170 | | 2020 | 8,260,073 | | 2019 | 7,991,994 | | 2018 | 7,638,136 | | 2017 | 7,298,758 | | 2016 | 6,937,919 | | 2015 | 6,613,918 | | 2014 | 6,335,697 | | 2013 | 6,086,899 | | 2012 | 5,861,926 | | 2011 | 5,659,483 | | 2010 | 5,465,398 | | 2009 | 5,278,648 | | 2008 | 5,100,812 | | 2007 | 4,931,397 | | 2006 | 4,771,761 | | 2005 | 4,622,910 | | 2004 | 4,483,198 | | 2003 | 4,346,095 | | 2002 | 4,202,322 | | 2001 | 4,066,261 | | 2000 | 3,941,272 | | 1999 | 3,816,872 | | 1998 | 3,692,423 | | 1997 | 3,590,818 | | 1996 | 3,498,733 | | 1995 | 3,423,573 | | 1994 | 3,351,463 | | 1993 | 3,246,656 | | 1992 | 3,138,364 | | 1991 | 3,032,900 |
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