"Year"	"Number of Cases"
"2000"	"1"
"2001"	"1"
"2005"	"2"
"2006"	"2"
"2007"	"3"
"2008"	"1"
"2010"	"2"
"2011"	"1"
"2012"	"2"
"2013"	"3"
"2014"	"1"
"2015"	"1"
"2016"	"1"
"2017"	"3"
"2018"	"1"
"2019"	"2"
"2020"	"2"