Year	Cases per 100,000
1968	14.57
1969	12.26
1970	12.12
1971	12.3315
1972	13.833
1973	17.4145
1974	20.306
1975	19.4075
1976	21.879
1977	25.1905
1978	24.012
1979	27.1035
1980	28.635
1981	33.1165
1982	31.938
1983	33.9295
1984	37.451
1985	40.8625
1986	41.114
1987	44.0355
1988	44.477
1989	41.3385
1990	48.59
1991	51.27
1992	54.14
1993	57.2
1994	60.47
1995	63.98
1996	66.06
1997	68.25
1998	70.53
1999	72.91
2000	75.38
2001	79.47
2002	83.82
2003	88.46
2004	93.38
2005	98.64
2006	100.72
2007	102.85
2008	105.04
2009	107.28
2010	109.6
2011	110.58
2012	111.6
2013	112.63
2014	113.68
2015	114.75
2016	115.83