Year Number of 2000 42 2001 40 2002 35 2003 40 2004 47 2005 55 2006 51 2007 55 2008 53 2009 50 2010 46 2011 55 2012 50 2013 49 2014 47 2015 57 2016 55 2017 51 2018 53 2019 49 2020 55