Year	Cases per 100,000
1990	31.6
1991	31.16
1992	31.11
1993	31.17
1994	31.19
1995	31.43
1996	31.68
1997	31.98
1998	32.76
1999	33.1
2000	33.18
2001	33.16
2002	33.22
2003	33.59
2004	33.26
2005	32.72
2006	32.26
2007	32.15
2008	32.4
2009	32.35
2010	32.23
2011	31.84
2012	31.39
2013	30.94
2014	30.64
2015	30.43
2016	30.18