"Year" "Number of Cases" "2001" "2" "2002" "2" "2003" "2" "2004" "2" "2005" "9" "2006" "9" "2007" "13" "2008" "21" "2009" "16" "2010" "11" "2011" "17" "2012" "13" "2013" "16" "2014" "4"