Year	Cases per 100,000
1990	5.37
1991	5.4
1992	5.43
1993	5.47
1994	5.5
1995	5.54
1996	5.6
1997	5.66
1998	5.72
1999	5.78
2000	5.85
2001	5.91
2002	5.98
2003	6.05
2004	6.12
2005	6.19
2006	6.19
2007	6.19
2008	6.19
2009	6.19
2010	6.2
2011	6.18
2012	6.16
2013	6.14
2014	6.13
2015	6.11
2016	6.1