Year	Cases per 100,000
1990	13.15
1991	13.32
1992	13.39
1993	13.18
1994	13.23
1995	13.28
1996	13.99
1997	14.78
1998	15.76
1999	16.09
2000	17.02
2001	17.12
2002	17.5
2003	17.8
2004	18.28
2005	18.81
2006	19.42
2007	19.85
2008	20.68
2009	21.08
2010	21.56
2011	22.34
2012	22.6
2013	22.89
2014	23.06
2015	22.77
2016	22.78