Year	Cases per 100,000
2000	5.6
2001	5.7
2002	5.3
2003	5.2
2004	4.9
2005	4.8
2006	4.7
2007	4.6
2008	4.7
2009	4.6
2010	4
2011	4.1
2012	4.7
2013	4.6
2014	4.4
2015	4.6
2016	4.8
2017	4.9
2018	4.8
2019	5.1
2020	4.7