Year	Cases per 100,000
2000	18
2001	18
2002	17
2003	16
2004	15
2005	13
2006	13
2007	13
2008	13
2009	14
2010	14
2011	15
2012	15
2013	14
2014	13
2015	13
2016	12
2017	11
2018	11
2019	10
2020	7.1