Year	Cases per 100,000
1990	3.44
1991	3.5
1992	3.58
1993	3.65
1994	3.73
1995	3.81
1996	3.9
1997	4.02
1998	4.14
1999	4.26
2000	4.38
2001	4.34
2002	4.32
2003	4.29
2004	4.25
2005	4.22
2006	4.16
2007	4.1
2008	4.04
2009	3.99
2010	3.94
2011	3.97
2012	4
2013	4.04
2014	4.09
2015	4.13
2016	4.17