Year	Cases per 100,000
1963	13.62
1964	13.8
1965	15.09
1966	17.33
1967	17.2
1968	18.28
1969	19.37
1970	21.11
1971	16.839
1972	20.418
1973	20.367
1974	19.706
1975	22.345
1976	24.114
1977	28.193
1978	28.482
1979	28.851
1980	32.39
1981	35.839
1982	33.118
1983	36.097
1984	37.486
1985	35.795
1986	39.954
1987	40.143
1988	41.792
1989	47.081
1990	46.56
1991	47.51
1992	48.49
1993	49.51
1994	50.55
1995	51.63
1996	53.65
1997	55.78
1998	58.02
1999	60.38
2000	62.88
2001	65.21
2002	67.67
2003	70.26
2004	72.99
2005	75.86
2006	76.69
2007	77.54
2008	78.42
2009	79.33
2010	80.27
2011	78.91
2012	77.59
2013	76.31
2014	75.06
2015	73.85
2016	72.71