Year	Cases per 100,000
1953	50.8
1954	44.05
1955	50.81
1956	52.42
1957	57.27
1958	59.51
1959	63.7
1960	62.05
1961	64.91
1962	67.72
1963	66.91
1964	72.18
1965	72.87
1966	71.82
1967	76.86
1968	74.46
1969	80.1
1970	78.01
1971	82.079
1972	78.678
1973	79.637
1974	80.246
1975	78.405
1976	86.214
1977	85.733
1978	85.462
1979	83.201
1980	84.44
1981	83.389
1982	82.798
1983	82.837
1984	80.786
1985	83.345
1986	78.464
1987	77.893
1988	77.642
1989	71.001
1990	73.14
1991	70.43
1992	68.61
1993	65.9
1994	63.47
1995	62.46
1996	61.54
1997	59.55
1998	58.08
1999	56.13
2000	54.27
2001	53
2002	51.9
2003	50.6
2004	49.57
2005	48.53
2006	47.75
2007	46.71
2008	45.45
2009	44.51
2010	43.47
2011	42.28
2012	41.69
2013	41.14
2014	40.01
2015	38.72
2016	37.75