| Year | Value | | 2021 | 15,178,000 | | 2020 | 15,178,000 | | 2019 | 15,238,000 | | 2018 | 15,297,789 | | 2017 | 15,357,868 | | 2016 | 16,433,055 | | 2015 | 15,021,953 | | 2014 | 17,100,000 | | 2013 | 16,844,700 | | 2012 | 13,900,000 | | 2011 | 11,668,000 | | 2010 | 11,085,000 | | 2009 | 8,313,000 | | 2008 | 6,445,000 | | 2007 | 4,349,000 | | 2006 | 2,977,781 | | 2005 | 2,277,559 | | 2004 | 1,476,000 | | 2003 | 675,162 | | 2002 | 486,667 | | 2001 | 147,837 | | 2000 | 32,042 | | 1999 | 27,677 | | 1998 | 16,146 | | 1997 | 12,245 | | 1996 | 8,810 | | 1995 | 8,250 | | 1994 | 8,191 | | 1993 | 5,170 | | 1992 | 1,550 |
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