Year	Cases per 100,000
1990	14.17
1991	14.32
1992	14.48
1993	14.64
1994	14.8
1995	14.98
1996	15.28
1997	15.6
1998	15.94
1999	16.28
2000	16.64
2001	17.01
2002	17.4
2003	17.81
2004	18.23
2005	18.66
2006	18.96
2007	19.25
2008	19.56
2009	19.87
2010	20.2
2011	20.36
2012	20.54
2013	20.71
2014	20.89
2015	21.07
2016	21.26