"Year"	"Number of Cases"
"2000"	"1"
"2001"	"2"
"2009"	"1"
"2013"	"1"
"2016"	"4"
"2017"	"2"
"2018"	"1"
"2019"	"1"
"2020"	"1"
"2021"	"1"