| Year | Value | | 2022 | 7,937,385 | | 2021 | 7,560,710 | | 2020 | 6,960,654 | | 2019 | 7,559,829 | | 2018 | 7,588,554 | | 2017 | 8,233,499 | | 2016 | 7,832,802 | | 2015 | 8,048,388 | | 2014 | 7,725,092 | | 2013 | 7,767,235 | | 2012 | 7,370,034 | | 2011 | 8,062,229 | | 2010 | 9,505,071 | | 2009 | 8,390,755 | | 2008 | 6,210,711 | | 2007 | 4,184,834 | | 2006 | 2,240,756 | | 2005 | 1,281,462 | | 2004 | 707,201 | | 2003 | 379,362 | | 2002 | 326,508 | | 2001 | 237,629 | | 2000 | 155,271 | | 1999 | 78,588 | | 1998 | 34,896 | | 1997 | 14,427 | | 1996 | 2,311 |
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