Year	Cases per 100,000
1990	2.98
1991	2.97
1992	3.02
1993	3.08
1994	3.19
1995	3.22
1996	3.22
1997	3.26
1998	3.38
1999	3.51
2000	3.57
2001	3.6
2002	3.63
2003	3.68
2004	3.68
2005	3.61
2006	3.4
2007	3.25
2008	3.18
2009	3.12
2010	3.07
2011	2.98
2012	2.92
2013	2.9
2014	2.87
2015	2.83
2016	2.8