Year	Cases per 100,000
1990	36.79
1991	37.63
1992	38.27
1993	37.6
1994	38.5
1995	38.08
1996	38.46
1997	37.26
1998	36.1
1999	35.97
2000	33.94
2001	33.93
2002	35.11
2003	34.44
2004	32.6
2005	32.36
2006	32.03
2007	31.28
2008	31.31
2009	31.05
2010	30.7
2011	30.57
2012	30.11
2013	30.25
2014	30.05
2015	30.01
2016	29.91