Year	Cases per 100,000
1990	6.11
1991	6.21
1992	6.32
1993	6.42
1994	6.54
1995	6.65
1996	6.79
1997	6.94
1998	7.09
1999	7.24
2000	7.4
2001	7.49
2002	7.58
2003	7.68
2004	7.78
2005	7.87
2006	7.78
2007	7.69
2008	7.61
2009	7.52
2010	7.44
2011	7.52
2012	7.61
2013	7.7
2014	7.79
2015	7.88
2016	7.97