Year	Cases per 100,000
2000	19
2001	19
2002	17
2003	19
2004	14
2005	17
2006	17
2007	17
2008	17
2009	17
2010	18
2011	17
2012	17
2013	17
2014	18
2015	18
2016	18
2017	18
2018	18
2019	19
2020	14