Year	Cases per 100,000
2000	14
2001	10
2002	12
2003	11
2004	11
2005	10
2006	9.3
2007	8.6
2008	8.6
2009	9.2
2010	9.8
2011	9.1
2012	10
2013	10
2014	10
2015	10
2016	9.6
2017	9.3
2018	10
2019	9.4
2020	7.9