Year	Cases per 100,000
1953	17.1
1954	18.19
1955	17.85
1956	17.92
1957	18.75
1958	18.17
1959	20.36
1960	19.22
1961	21.44
1962	20.5
1963	23.13
1964	21.58
1965	21.48
1966	22.43
1967	23.82
1968	23.58
1969	22.42
1970	22.95
1971	24.845
1972	26.81
1973	29.195
1974	29.56
1975	34.625
1976	37.17
1977	39.195
1978	41.63
1979	44.415
1980	46.71
1981	46.975
1982	48.39
1983	52.225
1984	52.7
1985	53.975
1986	56.69
1987	60.855
1988	61.15
1989	62.915
1990	64.67
1991	65.43
1992	66.21
1993	67
1994	67.8
1995	68.61
1996	71.09
1997	73.69
1998	76.43
1999	79.32
2000	82.35
2001	85.88
2002	89.63
2003	93.62
2004	97.88
2005	102.42
2006	104.27
2007	106.2
2008	108.2
2009	110.28
2010	112.43
2011	112.49
2012	112.55
2013	112.6
2014	112.67
2015	112.74
2016	112.82