Year	Cases per 100,000
1990	5.78
1991	5.83
1992	5.88
1993	5.94
1994	6
1995	6.07
1996	6.09
1997	6.12
1998	6.15
1999	6.19
2000	6.23
2001	6.23
2002	6.23
2003	6.24
2004	6.25
2005	6.26
2006	6.24
2007	6.22
2008	6.21
2009	6.19
2010	6.19
2011	6.19
2012	6.19
2013	6.2
2014	6.21
2015	6.22
2016	6.23