Year	Cases per 100,000
1990	32.05
1991	31.96
1992	31.88
1993	31.81
1994	31.73
1995	31.66
1996	31.24
1997	30.83
1998	30.43
1999	30.03
2000	29.66
2001	29.44
2002	29.24
2003	29.04
2004	28.84
2005	28.66
2006	28.8
2007	28.92
2008	29.06
2009	29.2
2010	29.35
2011	29.52
2012	29.69
2013	29.87
2014	30.05
2015	30.23
2016	30.42