Year	Cases per 100,000
1968	30.28
1969	27.3
1970	28.8
1971	30.413
1972	30.416
1973	26.889
1974	28.602
1975	33.025
1976	32.108
1977	34.651
1978	34.514
1979	35.117
1980	37.68
1981	36.013
1982	39.466
1983	38.989
1984	41.462
1985	42.895
1986	44.268
1987	45.451
1988	46.304
1989	48.347
1990	46.38
1991	47.42
1992	48.51
1993	49.66
1994	50.85
1995	52.1
1996	53.02
1997	53.99
1998	54.98
1999	56.01
2000	57.07
2001	57.72
2002	58.38
2003	59.06
2004	59.76
2005	60.47
2006	60.75
2007	61.02
2008	61.32
2009	61.62
2010	61.95
2011	62.17
2012	62.41
2013	62.65
2014	62.9
2015	63.15
2016	63.43