Year	Cases per 100,000
1990	12.55
1991	12.98
1992	13.43
1993	13.89
1994	14.37
1995	14.87
1996	15.09
1997	15.31
1998	15.54
1999	15.77
2000	16.01
2001	15.98
2002	15.96
2003	15.93
2004	15.91
2005	15.89
2006	16.3
2007	16.72
2008	17.16
2009	17.61
2010	18.08
2011	18.51
2012	18.97
2013	19.43
2014	19.91
2015	20.39
2016	20.9