Year	Cases per 100,000
2000	14
2001	13
2002	12
2003	11
2004	12
2005	10
2006	13
2007	12
2008	13
2009	12
2010	10
2011	10
2012	11
2013	8.8
2014	8.9
2015	7.7
2016	7.7
2017	5.8
2018	5.1
2019	7.4
2020	6.1