Year	Cases per 100,000
1990	12.58
1991	12.78
1992	13.02
1993	13.22
1994	13.44
1995	13.67
1996	13.93
1997	14.17
1998	14.55
1999	14.93
2000	15.44
2001	15.64
2002	15.86
2003	16.05
2004	16.13
2005	16.29
2006	17.11
2007	17.83
2008	18.52
2009	19.19
2010	19.78
2011	20.01
2012	20.15
2013	20.11
2014	20.19
2015	20.29
2016	20.42