Year	Cases per 100,000
1958	12.72
1959	14.29
1960	14.54
1961	15.89
1962	17.31
1963	18.4
1964	18.74
1965	19.52
1966	18.5
1967	19.01
1968	21.25
1969	21.01
1970	21.77
1971	23.1205
1972	24.701
1973	25.9515
1974	26.812
1975	27.3725
1976	29.473
1977	28.5835
1978	29.044
1979	28.0445
1980	30.745
1981	31.5955
1982	32.976
1983	32.3565
1984	33.597
1985	32.7975
1986	33.028
1987	33.1985
1988	33.409
1989	34.0695
1990	34.29
1991	33.73
1992	32.86
1993	32.26
1994	31.77
1995	31.41
1996	30.89
1997	30.63
1998	30.37
1999	30.36
2000	30.26
2001	30.19
2002	30
2003	30.03
2004	30.19
2005	29.82
2006	29.07
2007	28.61
2008	28.3
2009	27.49
2010	26.92
2011	26.67
2012	26.2
2013	25.56
2014	24.94
2015	24.76
2016	24.5