Year	Cases per 100,000
1990	3.81
1991	3.88
1992	3.95
1993	4.01
1994	4.08
1995	4.16
1996	4.24
1997	4.32
1998	4.41
1999	4.5
2000	4.59
2001	4.61
2002	4.63
2003	4.65
2004	4.68
2005	4.7
2006	4.74
2007	4.79
2008	4.83
2009	4.88
2010	4.93
2011	4.95
2012	4.98
2013	5.01
2014	5.03
2015	5.06
2016	5.09