| Year | Value | | 2023 | 13,589,630 | | 2022 | 13,450,139 | | 2021 | 13,019,705 | | 2020 | 12,568,040 | | 2019 | 12,312,326 | | 2018 | 11,955,874 | | 2017 | 11,559,488 | | 2016 | 11,164,590 | | 2015 | 10,804,007 | | 2014 | 10,453,350 | | 2013 | 10,162,684 | | 2012 | 9,943,798 | | 2011 | 9,759,019 | | 2010 | 9,606,346 | | 2009 | 9,396,319 | | 2008 | 9,128,641 | | 2007 | 8,851,985 | | 2006 | 8,567,552 | | 2005 | 8,296,846 | | 2004 | 8,056,338 | | 2003 | 7,850,897 | | 2002 | 7,663,415 | | 2001 | 7,475,649 | | 2000 | 7,273,545 | | 1999 | 7,061,469 | | 1998 | 6,872,080 | | 1997 | 6,695,031 | | 1996 | 6,515,269 | | 1995 | 6,290,201 | | 1994 | 6,072,440 | | 1993 | 5,886,241 | | 1992 | 5,760,814 | | 1991 | 5,653,114 |
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