Year	Cases per 100,000
2000	2.5
2001	2
2003	1
2004	0.66
2005	0.78
2006	1.1
2007	0.88
2008	1
2009	0.88
2010	0.76
2011	0.77
2012	0.75
2014	0.97
2015	0.91
2016	0.78
2017	0.61
2018	0.62
2019	0.42
2020	0.51