| Year | Value | | 2023 | 8,788,140 | | 2022 | 8,774,915 | | 2021 | 8,694,780 | | 2020 | 8,456,529 | | 2019 | 8,666,096 | | 2018 | 8,491,355 | | 2017 | 8,764,804 | | 2016 | 8,660,411 | | 2015 | 8,589,975 | | 2014 | 8,203,072 | | 2013 | 8,220,580 | | 2012 | 8,248,982 | | 2011 | 8,224,720 | | 2010 | 8,203,628 | | 2009 | 8,156,187 | | 2008 | 8,105,462 | | 2007 | 8,048,679 | | 2006 | 7,988,902 | | 2005 | 7,932,787 | | 2004 | 7,879,885 | | 2003 | 7,823,098 | | 2002 | 7,760,932 | | 2001 | 7,693,198 | | 2000 | 7,638,559 | | 1999 | 7,796,421 | | 1998 | 7,907,828 | | 1997 | 7,331,708 | | 1996 | 7,243,967 | | 1995 | 7,057,069 | | 1994 | 7,203,212 | | 1993 | 7,026,883 | | 1992 | 6,881,996 | | 1991 | 7,044,265 |
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