"Year" "Number of Cases" "2000" "1" "2004" "1" "2008" "1" "2009" "2" "2013" "1" "2015" "1" "2016" "1" "2018" "4" "2020" "1" "2021" "21" "2022" "19" "2023" "18" "2024" "16"