Year	Cases per 100,000
1990	6.41
1991	6.33
1992	6.25
1993	6.17
1994	6.09
1995	6.01
1996	6.19
1997	6.37
1998	6.56
1999	6.75
2000	6.96
2001	7.19
2002	7.43
2003	7.68
2004	7.94
2005	8.21
2006	8.24
2007	8.27
2008	8.3
2009	8.33
2010	8.36
2011	8.32
2012	8.28
2013	8.24
2014	8.21
2015	8.17
2016	8.14