Year	Cases per 100,000
2000	5.7
2001	9.5
2002	11
2003	9.3
2004	9.3
2005	8.6
2006	9.1
2007	11
2008	12
2009	5.8
2010	5.2
2011	4
2012	6.2
2013	5.1
2014	3.4
2015	7.8
2016	1.7
2017	6.1
2018	2.7
2019	3.3
2020	4.4