Year	Cases per 100,000
1953	8.72
1954	9.88
1955	8.76
1956	10.1
1957	10.63
1958	11.17
1959	12.79
1960	13.59
1961	13.65
1962	14.28
1963	15.38
1964	16.01
1965	15.69
1966	16.76
1967	18.11
1968	21.53
1969	19.62
1970	22.27
1971	23.9055
1972	24.721
1973	22.4365
1974	26.502
1975	28.9375
1976	30.653
1977	31.3385
1978	33.454
1979	33.5095
1980	36.605
1981	39.0405
1982	39.406
1983	38.1515
1984	42.717
1985	42.3125
1986	46.268
1987	43.9235
1988	45.509
1989	45.1845
1990	46.45
1991	47.19
1992	48.09
1993	49.01
1994	48.81
1995	48.62
1996	48.41
1997	49
1998	49.59
1999	50.23
2000	50.63
2001	51.78
2002	52.31
2003	51.31
2004	50.36
2005	49.86
2006	49.85
2007	50.06
2008	49.59
2009	49.39
2010	49.82
2011	49.84
2012	49.42
2013	48.52
2014	46.81
2015	45.71
2016	44.88