Year	Cases per 100,000
2000	41
2001	42
2002	42
2003	38
2004	35
2005	31
2006	31
2007	28
2008	27
2009	26
2010	25
2011	24
2012	24
2013	22
2014	21
2015	20
2016	17
2017	17
2018	18
2019	17
2020	14