Year	Cases per 100,000
1990	1.79
1991	1.86
1992	1.94
1993	2.02
1994	2.11
1995	2.2
1996	2.15
1997	2.09
1998	2.05
1999	2
2000	1.95
2001	2.05
2002	2.16
2003	2.28
2004	2.4
2005	2.53
2006	2.6
2007	2.67
2008	2.74
2009	2.82
2010	2.9
2011	2.95
2012	3
2013	3.05
2014	3.11
2015	3.16
2016	3.22