Year	Cases per 100,000
1953	25.72
1954	25.14
1955	26.71
1956	27.2
1957	25.42
1958	28.41
1959	30.26
1960	28.54
1961	26.89
1962	27.14
1963	27.39
1964	29.18
1965	28.8
1966	29.61
1967	28.32
1968	30.6
1969	31.04
1970	29.96
1971	28.0155
1972	27.771
1973	29.3065
1974	29.632
1975	28.0775
1976	30.833
1977	31.6085
1978	29.884
1979	30.0695
1980	29.225
1981	28.1105
1982	29.806
1983	30.5315
1984	27.857
1985	27.7525
1986	27.348
1987	28.2635
1988	30.099
1989	28.3145
1990	26.97
1991	28.78
1992	30.72
1993	32.81
1994	35.05
1995	37.47
1996	38.62
1997	39.81
1998	41.05
1999	42.32
2000	43.64
2001	43.92
2002	44.2
2003	44.48
2004	44.77
2005	45.07
2006	44.98
2007	44.9
2008	44.82
2009	44.74
2010	44.66
2011	44.27
2012	43.88
2013	43.5
2014	43.13
2015	42.76
2016	42.41