Year	Cases per 100,000
1990	7.42
1991	7.45
1992	7.49
1993	7.53
1994	7.57
1995	7.61
1996	7.97
1997	8.35
1998	8.75
1999	9.17
2000	9.62
2001	9.66
2002	9.7
2003	9.75
2004	9.79
2005	9.84
2006	9.59
2007	9.34
2008	9.1
2009	8.87
2010	8.65
2011	8.79
2012	8.92
2013	9.07
2014	9.21
2015	9.35
2016	9.51