Year	Cases per 100,000
2002	2.9
2006	27
2007	4.2
2008	18
2009	5.6
2010	11
2011	2.8
2012	9.9
2013	4.2
2014	1.4
2015	9.8
2016	7
2017	1.4
2018	5.6
2019	14