Year | Value | 2021 | 17,412 | 2020 | 12,773 | 2019 | 30,964 | 2018 | 28,160 | 2017 | 29,705 | 2016 | 31,958 | 2015 | 31,304 | 2014 | 28,944 | 2013 | 18,156 | 2012 | 16,841 | 2011 | 17,303 | 2010 | 16,893 | 2009 | 17,208 | 2008 | 19,568 | 2007 | 19,971 | 2006 | 19,664 | 2005 | 17,048 | 2004 | 19,729 | 2003 | 17,205 | 2002 | 19,935 | 2001 | 14,000 |
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