Year	Cases per 100,000
1953	10.8
1954	10
1955	9.35
1956	10.75
1957	10.03
1958	11.04
1959	10.7
1960	12.98
1961	11.68
1962	13.27
1963	14.58
1964	13.65
1965	12.92
1966	13.91
1967	14.82
1968	14.3
1969	14.6
1970	14.26
1971	16.2145
1972	16.079
1973	17.0135
1974	17.638
1975	16.8825
1976	18.627
1977	18.8515
1978	17.546
1979	20.9705
1980	20.605
1981	20.5795
1982	21.534
1983	20.0585
1984	21.403
1985	21.3575
1986	23.242
1987	23.7665
1988	22.111
1989	23.0655
1990	24.25
1991	24.5
1992	24.76
1993	25.03
1994	25.3
1995	25.57
1996	25.8
1997	26.04
1998	26.28
1999	26.53
2000	26.78
2001	26.68
2002	26.58
2003	26.5
2004	26.41
2005	26.33
2006	26.34
2007	26.35
2008	26.36
2009	26.38
2010	26.39
2011	26.16
2012	25.94
2013	25.72
2014	25.51
2015	25.29
2016	25.09