| Year | Value | | 2021 | 24,678,315 | | 2020 | 22,117,218 | | 2019 | 20,364,508 | | 2018 | 19,339,109 | | 2017 | 17,946,375 | | 2016 | 15,404,040 | | 2015 | 14,446,897 | | 2014 | 12,494,391 | | 2013 | 11,240,886 | | 2012 | 9,976,105 | | 2011 | 7,682,100 | | 2010 | 5,707,850 | | 2009 | 3,823,625 | | 2008 | 3,024,150 | | 2007 | 1,858,038 | | 2006 | 1,016,605 | | 2005 | 633,554 | | 2004 | 395,939 | | 2003 | 238,094 | | 2002 | 111,013 | | 2001 | 76,186 | | 2000 | 25,245 | | 1999 | 5,036 | | 1998 | 2,730 | | 1997 | 1,503 | | 1996 | 525 |
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