Year	Cases per 100,000
1990	1.91
1991	1.9
1992	1.89
1993	1.89
1994	1.88
1995	1.88
1996	1.95
1997	2.02
1998	2.1
1999	2.18
2000	2.26
2001	2.36
2002	2.46
2003	2.57
2004	2.69
2005	2.81
2006	2.87
2007	2.92
2008	2.97
2009	3.03
2010	3.1
2011	3.12
2012	3.15
2013	3.18
2014	3.21
2015	3.24
2016	3.28