Year	Cases per 100,000
1963	1.06
1964	0.73
1965	4.1
1966	3.77
1967	2.6
1968	3.04
1969	2.19
1970	1.4
1971	2.4675
1972	2.415
1973	2.2725
1974	2.38
1975	2.7875
1976	2.525
1977	2.2725
1978	2.47
1979	2.1375
1980	2.755
1981	2.0825
1982	1.83
1983	1.9775
1984	2.575
1985	1.7625
1986	2.4
1987	2.9775
1988	2.805
1989	2.3725
1990	2.61
1991	2.61
1992	2.6
1993	2.6
1994	2.6
1995	2.6
1996	2.59
1997	2.58
1998	2.58
1999	2.57
2000	2.57
2001	2.6
2002	2.64
2003	2.68
2004	2.73
2005	2.77
2006	2.79
2007	2.81
2008	2.82
2009	2.84
2010	2.86
2011	2.9
2012	2.93
2013	2.97
2014	3.01
2015	3.05
2016	3.09