Year	Cases per 100,000
1990	91.85
1991	91.58
1992	91.21
1993	91.35
1994	91.17
1995	90.65
1996	88.21
1997	85.23
1998	83.86
1999	82.84
2000	82
2001	81
2002	79.46
2003	77.46
2004	75.7
2005	73.54
2006	70.47
2007	68.63
2008	67.86
2009	67.01
2010	66.05
2011	65.19
2012	64.53
2013	63.94
2014	63.63
2015	64.2
2016	64.37