Year	Cases per 100,000
2000	18
2001	15
2002	7.1
2003	15
2004	9.2
2005	13
2006	15
2007	6
2008	4.8
2009	9.5
2010	8.3
2011	3.6
2012	11
2013	6.2
2014	7.6
2015	5.1
2016	5.2
2017	1.3
2018	2.6
2019	6.5
2020	2.6