Year	Cases per 100,000
1990	1.98
1991	2.05
1992	2.12
1993	2.19
1994	2.26
1995	2.34
1996	2.39
1997	2.43
1998	2.47
1999	2.52
2000	2.57
2001	2.61
2002	2.66
2003	2.7
2004	2.75
2005	2.81
2006	2.86
2007	2.91
2008	2.97
2009	3.02
2010	3.09
2011	3.1
2012	3.11
2013	3.13
2014	3.14
2015	3.16
2016	3.17