Year | Value | 2023 | 23,155,848 | 2022 | 22,155,169 | 2021 | 21,388,910 | 2020 | 20,751,044 | 2019 | 22,365,350 | 2018 | 23,074,215 | 2017 | 24,015,244 | 2016 | 23,988,437 | 2015 | 22,841,305 | 2014 | 21,951,711 | 2013 | 21,765,349 | 2012 | 21,522,380 | 2011 | 21,019,015 | 2010 | 21,174,300 | 2009 | 20,888,394 | 2008 | 19,976,829 | 2007 | 20,532,620 | 2006 | 19,719,317 | 2005 | 19,152,662 | 2004 | 18,206,549 | 2003 | 17,305,994 | 2002 | 16,457,805 | 2001 | 16,354,644 | 2000 | 15,697,870 | 1999 | 14,940,174 | 1998 | 13,931,836 | 1997 | 13,433,483 | 1996 | 12,984,406 | 1995 | 12,684,800 | 1994 | 12,440,526 | 1993 | 11,869,283 | 1992 | 11,607,390 | 1991 | 11,062,302 |
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