Year	Cases per 100,000
1990	13.69
1991	14.01
1992	14.34
1993	14.69
1994	15.05
1995	15.42
1996	15.69
1997	15.97
1998	16.26
1999	16.56
2000	16.87
2001	17.36
2002	17.88
2003	18.42
2004	18.98
2005	19.57
2006	20.04
2007	20.54
2008	21.05
2009	21.58
2010	22.14
2011	22.61
2012	23.1
2013	23.6
2014	24.11
2015	24.64
2016	25.19