Year | Value | 2023 | 23,155,848 | 2022 | 22,451,373 | 2021 | 21,655,241 | 2020 | 20,993,144 | 2019 | 22,628,310 | 2018 | 23,319,911 | 2017 | 24,254,131 | 2016 | 24,218,826 | 2015 | 23,072,919 | 2014 | 22,159,106 | 2013 | 21,957,825 | 2012 | 21,713,230 | 2011 | 21,197,783 | 2010 | 21,329,801 | 2009 | 21,044,414 | 2008 | 20,128,598 | 2007 | 20,681,645 | 2006 | 19,848,279 | 2005 | 19,270,263 | 2004 | 18,320,619 | 2003 | 17,412,907 | 2002 | 16,540,892 | 2001 | 16,434,734 | 2000 | 15,793,596 | 1999 | 15,032,443 | 1998 | 14,020,901 | 1997 | 13,519,658 | 1996 | 13,066,440 | 1995 | 12,763,129 | 1994 | 12,515,320 | 1993 | 11,940,788 | 1992 | 11,675,813 | 1991 | 11,127,805 |
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