Year	Cases per 100,000
2000	57
2001	51
2002	45
2003	42
2004	39
2005	35
2006	31
2007	34
2008	30
2009	27
2010	21
2011	22
2012	20
2013	20
2014	18
2015	16
2016	14
2017	13
2018	11
2019	11
2020	9