Year	Cases per 100,000
1953	12.75
1954	12.37
1955	13.85
1956	13.26
1957	13.59
1958	15.66
1959	14.52
1960	14.68
1961	14.21
1962	14.97
1963	16.34
1964	16.33
1965	15.45
1966	17.98
1967	18.69
1968	18.7
1969	18.82
1970	20.6
1971	20.976
1972	22.262
1973	20.698
1974	24.274
1975	26.05
1976	26.216
1977	29.522
1978	31.218
1979	32.244
1980	33.63
1981	34.946
1982	35.472
1983	35.368
1984	37.384
1985	37.26
1986	38.216
1987	39.002
1988	39.908
1989	41.964
1990	40.37
1991	41.19
1992	42.02
1993	42.88
1994	43.76
1995	44.66
1996	45.21
1997	45.77
1998	46.34
1999	46.92
2000	47.51
2001	47.66
2002	47.81
2003	47.96
2004	48.12
2005	48.27
2006	48.29
2007	48.31
2008	48.33
2009	48.36
2010	48.39
2011	48.37
2012	48.34
2013	48.32
2014	48.3
2015	48.28
2016	48.28