Year	Cases per 100,000
1990	3.35
1991	3.34
1992	3.33
1993	3.32
1994	3.31
1995	3.3
1996	3.32
1997	3.34
1998	3.34
1999	3.35
2000	3.36
2001	3.39
2002	3.43
2003	3.46
2004	3.5
2005	3.56
2006	3.54
2007	3.54
2008	3.53
2009	3.57
2010	3.61
2011	3.65
2012	3.7
2013	3.74
2014	3.78
2015	3.8
2016	3.83