Year	Cases per 100,000
1958	19.45
1959	19.46
1960	18.4
1961	18.74
1962	20.27
1963	20.75
1964	20.56
1965	21.46
1966	20.58
1967	21.57
1968	21.4
1969	21.43
1970	21.93
1971	21.5855
1972	22.661
1973	24.3465
1974	23.662
1975	23.4875
1976	23.783
1977	24.6485
1978	25.774
1979	27.3495
1980	28.115
1981	28.3805
1982	28.956
1983	30.2315
1984	29.967
1985	30.5025
1986	31.458
1987	32.0635
1988	31.019
1989	32.4445
1990	33.24
1991	33.69
1992	34.16
1993	34.64
1994	35.14
1995	35.64
1996	36.03
1997	36.43
1998	36.83
1999	37.24
2000	37.65
2001	37.87
2002	38.09
2003	38.31
2004	38.54
2005	38.78
2006	38.33
2007	37.88
2008	37.45
2009	37.02
2010	36.61
2011	36.54
2012	36.46
2013	36.39
2014	36.33
2015	36.26
2016	36.2