Year	Cases per 100,000
2000	19
2001	16
2002	20
2003	22
2004	20
2005	23
2006	26
2008	21
2009	34
2010	37
2011	23
2012	24
2013	26
2014	26
2015	26
2016	20
2017	23
2018	30
2019	23
2020	18