| Year | Value | | 2023 | 4,400,646 | | 2022 | 4,267,534 | | 2021 | 4,121,670 | | 2020 | 4,004,061 | | 2019 | 3,923,389 | | 2018 | 3,858,186 | | 2017 | 3,795,285 | | 2016 | 3,732,312 | | 2015 | 3,668,093 | | 2014 | 3,605,101 | | 2013 | 3,545,237 | | 2012 | 3,486,597 | | 2011 | 3,426,953 | | 2010 | 3,368,027 | | 2009 | 3,311,120 | | 2008 | 3,254,659 | | 2007 | 3,199,079 | | 2006 | 3,149,846 | | 2005 | 3,113,788 | | 2004 | 3,082,810 | | 2003 | 3,044,383 | | 2002 | 3,001,647 | | 2001 | 2,965,008 | | 2000 | 2,943,907 | | 1999 | 2,897,620 | | 1998 | 2,838,965 | | 1997 | 2,800,182 | | 1996 | 2,756,020 | | 1995 | 2,678,831 | | 1994 | 2,608,227 | | 1993 | 2,534,349 | | 1992 | 2,460,535 | | 1991 | 2,384,744 |
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