| Year | Value | | 2023 | 5,829,755 | | 2022 | 5,723,799 | | 2021 | 5,638,697 | | 2020 | 5,569,519 | | 2019 | 5,554,111 | | 2018 | 5,483,210 | | 2017 | 5,406,464 | | 2016 | 5,307,317 | | 2015 | 5,230,067 | | 2014 | 5,174,559 | | 2013 | 5,122,087 | | 2012 | 5,052,398 | | 2011 | 5,012,570 | | 2010 | 4,947,828 | | 2009 | 4,912,421 | | 2008 | 4,904,595 | | 2007 | 4,844,850 | | 2006 | 4,768,932 | | 2005 | 4,690,191 | | 2004 | 4,622,281 | | 2003 | 4,607,164 | | 2002 | 4,579,588 | | 2001 | 4,558,776 | | 2000 | 4,487,120 | | 1999 | 4,515,581 | | 1998 | 4,468,932 | | 1997 | 4,507,223 | | 1996 | 4,521,856 | | 1995 | 4,528,182 | | 1994 | 4,472,053 | | 1993 | 4,504,162 | | 1992 | 4,592,918 | | 1991 | 4,677,671 |
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