Year	Cases per 100,000
1990	77.24
1991	76.9
1992	75.87
1993	75.83
1994	75.19
1995	74.26
1996	72.55
1997	71.52
1998	69.52
1999	70.39
2000	67.76
2001	66.66
2002	64.69
2003	65.78
2004	65.79
2005	66.4
2006	65.95
2007	63.8
2008	61.94
2009	64.4
2010	64.28
2011	63.84
2012	62.35
2013	62.03
2014	60.3
2015	58.95
2016	58.16