Year	Cases per 100,000
1990	6.84
1991	6.82
1992	6.92
1993	6.94
1994	6.87
1995	6.73
1996	6.78
1997	6.92
1998	7.17
1999	7.49
2000	7.89
2001	7.85
2002	7.77
2003	7.88
2004	7.97
2005	8.04
2006	8.1
2007	8.2
2008	8.37
2009	8.58
2010	8.83
2011	8.86
2012	8.91
2013	8.76
2014	8.58
2015	8.51
2016	8.51