Year | Value | 2023 | 17,426,289 | 2022 | 16,852,868 | 2021 | 16,277,314 | 2020 | 15,636,313 | 2019 | 15,300,673 | 2018 | 14,835,528 | 2017 | 14,371,486 | 2016 | 13,888,148 | 2015 | 13,420,114 | 2014 | 12,984,809 | 2013 | 12,557,985 | 2012 | 12,153,170 | 2011 | 12,008,485 | 2010 | 11,843,004 | 2009 | 11,694,370 | 2008 | 11,558,004 | 2007 | 11,410,382 | 2006 | 11,248,156 | 2005 | 11,081,049 | 2004 | 10,743,635 | 2003 | 10,437,342 | 2002 | 10,144,399 | 2001 | 9,841,308 | 2000 | 9,555,791 | 1999 | 9,289,787 | 1998 | 9,033,945 | 1997 | 8,868,028 | 1996 | 8,834,515 | 1995 | 8,769,989 | 1994 | 8,389,238 | 1993 | 7,942,685 | 1992 | 7,709,068 | 1991 | 7,506,994 |
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