Year	Cases per 100,000
1958	0.99
1959	1.31
1960	1.41
1961	1.39
1962	1.23
1963	1.5
1964	1.87
1965	1.9
1966	1.73
1967	1.98
1968	1.81
1969	2.31
1970	2
1971	2.5525
1972	2.585
1973	2.5075
1974	2.81
1975	2.6025
1976	3.045
1977	2.6675
1978	3.08
1979	2.9825
1980	2.715
1981	2.9875
1982	3.04
1983	2.9425
1984	3.215
1985	3.2775
1986	3.11
1987	3.0325
1988	3.165
1989	3.3875
1990	3.39
1991	3.33
1992	3.28
1993	3.24
1994	3.19
1995	3.14
1996	3.06
1997	2.98
1998	2.9
1999	2.83
2000	2.75
2001	2.72
2002	2.68
2003	2.65
2004	2.62
2005	2.59
2006	2.6
2007	2.6
2008	2.61
2009	2.61
2010	2.62
2011	2.65
2012	2.68
2013	2.71
2014	2.73
2015	2.77
2016	2.8