Year	Cases per 100,000
1953	11.49
1954	10.21
1955	9.9
1956	10.36
1957	10.59
1958	11.27
1959	12.33
1960	12.08
1961	11.56
1962	12.16
1963	14.93
1964	14.92
1965	15.06
1966	14.81
1967	14.67
1968	14.82
1969	16.88
1970	17.12
1971	16.883
1972	19.156
1973	17.419
1974	18.772
1975	20.985
1976	20.908
1977	23.051
1978	23.774
1979	24.507
1980	24.83
1981	25.253
1982	27.686
1983	29.129
1984	27.952
1985	29.225
1986	29.588
1987	30.791
1988	31.164
1989	30.327
1990	32.94
1991	33.3
1992	33.66
1993	34.03
1994	34.41
1995	34.79
1996	35.1
1997	35.42
1998	35.75
1999	36.08
2000	36.42
2001	36.68
2002	36.95
2003	37.22
2004	37.5
2005	37.78
2006	37.88
2007	37.97
2008	38.06
2009	38.16
2010	38.27
2011	37.95
2012	37.65
2013	37.35
2014	37.06
2015	36.77
2016	36.49