"Year" "Number of Cases" "2000" "4" "2001" "6" "2002" "7" "2003" "6" "2004" "15" "2005" "14" "2006" "20" "2007" "13" "2008" "12" "2009" "23" "2010" "25" "2011" "39" "2012" "22" "2013" "16" "2014" "16"