Year	Cases per 100,000
2000	37
2001	31
2002	33
2003	32
2004	27
2005	24
2006	24
2007	22
2008	23
2009	19
2010	16
2011	14
2012	13
2013	12
2014	12
2015	11
2016	11
2017	8.7
2018	8.8
2019	7.2
2020	4.3