Year	Cases per 100,000
1990	1.41
1991	1.46
1992	1.51
1993	1.57
1994	1.62
1995	1.68
1996	1.74
1997	1.79
1998	1.85
1999	1.91
2000	1.98
2001	2.07
2002	2.16
2003	2.27
2004	2.37
2005	2.49
2006	2.6
2007	2.72
2008	2.84
2009	2.97
2010	3.1
2011	3.14
2012	3.18
2013	3.22
2014	3.25
2015	3.29
2016	3.34