Year	Cases per 100,000
1990	16.49
1991	16.53
1992	16.56
1993	16.61
1994	16.67
1995	16.8
1996	16.89
1997	16.96
1998	17.05
1999	17.09
2000	17.06
2001	17.06
2002	17.05
2003	17.04
2004	17.02
2005	16.99
2006	16.89
2007	16.91
2008	16.96
2009	16.99
2010	17.02
2011	17.1
2012	16.99
2013	16.88
2014	16.79
2015	16.71
2016	16.42