Year	Cases per 100,000
2000	5.2
2001	5.1
2002	3.4
2003	5
2004	8.4
2005	10
2006	6.8
2007	5.1
2008	5.2
2009	7.1
2010	7.1
2011	5.4
2015	7.2
2017	9
2018	0
2019	1.8
2020	5.4