Year	Cases per 100,000
2000	12
2001	2.3
2002	0
2003	0
2004	2.1
2006	0
2007	1.9
2008	1.9
2009	3.6
2010	7.1
2011	3.5
2012	10
2013	8.3
2014	0
2015	11
2016	4.8
2017	6.3
2018	4.7
2019	6.2
2020	3