Year	Cases per 100,000
1990	3.76
1991	3.76
1992	3.76
1993	3.76
1994	3.76
1995	3.77
1996	3.78
1997	3.8
1998	3.83
1999	3.9
2000	3.98
2001	4.03
2002	4.08
2003	4.13
2004	4.18
2005	4.21
2006	4.28
2007	4.35
2008	4.42
2009	4.5
2010	4.56
2011	4.6
2012	4.63
2013	4.66
2014	4.69
2015	4.72
2016	4.75