Year	Cases per 100,000
1990	1.77
1991	1.78
1992	1.79
1993	1.8
1994	1.81
1995	1.82
1996	1.84
1997	1.87
1998	1.9
1999	1.93
2000	1.96
2001	1.98
2002	2.01
2003	2.03
2004	2.06
2005	2.09
2006	2.1
2007	2.12
2008	2.13
2009	2.15
2010	2.17
2011	2.18
2012	2.18
2013	2.19
2014	2.2
2015	2.21
2016	2.22