| Year | Value | | 2023 | 7,806,370 | | 2022 | 7,550,541 | | 2021 | 7,279,173 | | 2020 | 7,038,327 | | 2019 | 6,880,077 | | 2018 | 6,656,735 | | 2017 | 6,438,303 | | 2016 | 6,219,192 | | 2015 | 6,007,689 | | 2014 | 5,856,376 | | 2013 | 5,711,418 | | 2012 | 5,574,845 | | 2011 | 5,448,994 | | 2010 | 5,334,780 | | 2009 | 5,231,721 | | 2008 | 5,136,475 | | 2007 | 5,042,794 | | 2006 | 4,950,794 | | 2005 | 4,861,863 | | 2004 | 4,772,941 | | 2003 | 4,684,716 | | 2002 | 4,597,963 | | 2001 | 4,512,619 | | 2000 | 4,431,107 | | 1999 | 4,353,363 | | 1998 | 4,278,076 | | 1997 | 4,204,227 | | 1996 | 4,097,101 | | 1995 | 3,976,110 | | 1994 | 3,798,796 | | 1993 | 3,614,343 | | 1992 | 3,507,696 | | 1991 | 3,431,704 |
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