"Year" "Number of Cases" "2000" "2" "2001" "7" "2002" "5" "2004" "3" "2005" "5" "2006" "5" "2007" "4" "2008" "9" "2009" "6" "2010" "3" "2011" "4" "2012" "4" "2013" "4" "2014" "2"