| Year | Value | | 2023 | 7,257,455 | | 2022 | 7,069,008 | | 2021 | 6,764,382 | | 2020 | 6,460,734 | | 2019 | 6,481,136 | | 2018 | 6,472,399 | | 2017 | 6,364,813 | | 2016 | 6,184,488 | | 2015 | 6,022,488 | | 2014 | 5,883,588 | | 2013 | 5,682,211 | | 2012 | 5,980,602 | | 2011 | 5,486,770 | | 2010 | 5,253,574 | | 2009 | 5,145,327 | | 2008 | 5,037,761 | | 2007 | 4,931,026 | | 2006 | 4,825,217 | | 2005 | 4,720,723 | | 2004 | 4,617,954 | | 2003 | 4,484,181 | | 2002 | 4,358,998 | | 2001 | 4,234,659 | | 2000 | 4,118,457 | | 1999 | 4,000,815 | | 1998 | 3,886,371 | | 1997 | 3,773,272 | | 1996 | 3,667,107 | | 1995 | 3,567,466 | | 1994 | 3,465,767 | | 1993 | 3,366,798 | | 1992 | 3,267,770 | | 1991 | 3,168,564 |
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