Year	Cases per 100,000
2000	8.1
2001	7.6
2002	8.2
2003	7.9
2004	7.5
2005	7
2006	6.3
2007	5.6
2008	6.1
2009	6.5
2010	6.5
2011	6.6
2012	5.2
2013	5.7
2014	5.2
2015	6.4
2016	6.8
2017	6.3
2018	5.5
2019	4.7
2020	4.1