Year	Cases per 100,000
1990	10.26
1991	10.29
1992	10.33
1993	10.39
1994	10.45
1995	10.52
1996	10.63
1997	10.76
1998	10.89
1999	11.02
2000	11.16
2001	11.11
2002	11.07
2003	11.03
2004	10.99
2005	10.98
2006	10.99
2007	10.97
2008	10.92
2009	10.84
2010	10.72
2011	10.47
2012	10.21
2013	9.95
2014	9.81
2015	9.67
2016	9.54