Year	Cases per 100,000
1990	32.52
1991	32.19
1992	32.33
1993	32.15
1994	32.03
1995	32.02
1996	31.75
1997	31.92
1998	32.04
1999	32.1
2000	32.11
2001	31.84
2002	31.97
2003	31.89
2004	32.09
2005	32.04
2006	32.12
2007	32
2008	31.87
2009	32.04
2010	32.04
2011	32.02
2012	31.99
2013	31.85
2014	31.71
2015	31.58
2016	31.48