Year	Cases per 100,000
1958	25.15
1959	24.04
1960	24.23
1961	23.64
1962	23.49
1963	24.27
1964	26.04
1965	26.28
1966	26.65
1967	25.79
1968	25.45
1969	27.29
1970	26.73
1971	28.0175
1972	27.625
1973	28.8025
1974	28.88
1975	31.2775
1976	32.115
1977	32.4425
1978	32.66
1979	34.5375
1980	34.855
1981	35.9825
1982	36.42
1983	36.8175
1984	39.085
1985	40.2125
1986	40.04
1987	40.4575
1988	41.265
1989	41.9725
1990	42.57
1991	43.44
1992	44.35
1993	45.28
1994	46.24
1995	47.24
1996	47.72
1997	48.22
1998	48.72
1999	49.22
2000	49.73
2001	49.97
2002	50.2
2003	50.45
2004	50.69
2005	50.95
2006	50.57
2007	50.19
2008	49.83
2009	49.48
2010	49.13
2011	49.07
2012	49.03
2013	48.99
2014	48.94
2015	48.9
2016	48.86