Year	Cases per 100,000
2000	43
2001	53
2002	51
2003	37
2004	30
2005	36
2006	29
2007	21
2008	29
2009	28
2010	45
2011	22
2012	25
2013	35
2014	20
2015	22
2016	33
2017	31
2018	26
2019	23
2020	20