Year	Cases per 100,000
2000	69
2001	56
2002	53
2003	62
2004	57
2005	56
2006	54
2007	56
2008	54
2009	56
2010	54
2011	50
2012	51
2013	47
2014	41
2015	40
2016	34
2017	29
2018	25
2019	23
2020	16