Year Number of 2000 29 2001 23 2002 26 2003 48 2004 27 2005 26 2006 16 2007 17 2008 18 2009 26 2010 20 2011 13 2012 15 2013 9 2014 13 2015 14 2016 13 2017 14 2018 11 2019 10 2020 9