Year | Value | 2021 | 15,844 | 2020 | 11,648 | 2019 | 28,974 | 2018 | 19,960 | 2017 | 20,699 | 2016 | 24,009 | 2015 | 23,781 | 2014 | 21,910 | 2013 | 15,886 | 2012 | 16,597 | 2011 | 15,082 | 2010 | 9,885 | 2009 | 10,264 | 2008 | 12,008 | 2007 | 13,039 | 2006 | 12,777 | 2005 | 12,470 | 2004 | 11,090 | 2003 | 9,195 | 2002 | 8,175 | 2001 | 7,922 | 2000 | 8,012 | 1999 | 8,500 | 1998 | 10,100 | 1997 | 17,200 | 1996 | 19,500 | 1995 | 19,600 | 1994 | 22,200 | 1993 | 22,200 |
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