| Year | Value | | 2023 | 4,688,687 | | 2022 | 4,633,419 | | 2021 | 4,544,722 | | 2020 | 4,461,190 | | 2019 | 4,424,603 | | 2018 | 4,335,534 | | 2017 | 4,280,167 | | 2016 | 4,238,371 | | 2015 | 4,215,240 | | 2014 | 4,162,882 | | 2013 | 4,195,475 | | 2012 | 4,178,321 | | 2011 | 4,120,245 | | 2010 | 4,092,309 | | 2009 | 4,072,054 | | 2008 | 4,013,575 | | 2007 | 3,926,472 | | 2006 | 3,824,389 | | 2005 | 3,775,723 | | 2004 | 3,850,314 | | 2003 | 3,802,905 | | 2002 | 3,743,728 | | 2001 | 3,667,303 | | 2000 | 3,576,978 | | 1999 | 3,482,641 | | 1998 | 3,359,925 | | 1997 | 3,288,422 | | 1996 | 3,185,714 | | 1995 | 3,107,281 | | 1994 | 3,053,849 | | 1993 | 2,963,523 | | 1992 | 2,915,963 | | 1991 | 2,813,187 |
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