Year	Cases per 100,000
1990	12.87
1991	13.17
1992	13.48
1993	13.79
1994	14.11
1995	14.45
1996	14.81
1997	15.18
1998	15.57
1999	15.97
2000	16.38
2001	16.65
2002	16.94
2003	17.22
2004	17.52
2005	17.82
2006	18.08
2007	18.35
2008	18.63
2009	18.91
2010	19.19
2011	19.44
2012	19.7
2013	19.96
2014	20.22
2015	20.49
2016	20.76