Year	Cases per 100,000
1990	28.93
1991	28.9
1992	28.72
1993	28.64
1994	28.76
1995	28.47
1996	28.49
1997	29.2
1998	29.5
1999	29.18
2000	29.26
2001	29.21
2002	29.32
2003	29.47
2004	28.76
2005	28.84
2006	28.48
2007	28.98
2008	28.92
2009	28.65
2010	28.51
2011	28.44
2012	28.34
2013	28.3
2014	28.18
2015	27.91
2016	27.71