Year | Value | 2023 | 28,863,144 | 2022 | 27,942,173 | 2021 | 27,066,300 | 2020 | 25,942,130 | 2019 | 25,338,414 | 2018 | 24,484,819 | 2017 | 23,634,436 | 2016 | 22,784,480 | 2015 | 21,962,718 | 2014 | 21,167,528 | 2013 | 20,393,216 | 2012 | 19,664,272 | 2011 | 18,951,782 | 2010 | 18,272,318 | 2009 | 17,636,225 | 2008 | 17,044,365 | 2007 | 16,484,800 | 2006 | 15,950,635 | 2005 | 15,448,696 | 2004 | 14,831,855 | 2003 | 14,238,668 | 2002 | 13,667,876 | 2001 | 13,128,391 | 2000 | 12,628,765 | 1999 | 12,153,879 | 1998 | 11,698,907 | 1997 | 11,265,189 | 1996 | 10,833,881 | 1995 | 10,398,231 | 1994 | 9,970,273 | 1993 | 9,674,466 | 1992 | 9,387,556 | 1991 | 9,057,817 |
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