Year	Cases per 100,000
1990	7.51
1991	7.39
1992	7.22
1993	7.02
1994	6.83
1995	6.56
1996	6.42
1997	6.28
1998	6.18
1999	6.19
2000	6.17
2001	6.15
2002	6.24
2003	6.26
2004	6.27
2005	6.24
2006	6.34
2007	6.46
2008	6.64
2009	6.79
2010	6.93
2011	6.91
2012	6.9
2013	6.85
2014	6.82
2015	6.79
2016	6.75