Year	Cases per 100,000
1990	2.74
1991	2.76
1992	2.78
1993	2.8
1994	2.83
1995	2.85
1996	2.87
1997	2.88
1998	2.9
1999	2.9
2000	2.91
2001	2.93
2002	2.94
2003	2.96
2004	2.96
2005	2.98
2006	2.99
2007	3
2008	3.01
2009	3.02
2010	3.03
2011	3.06
2012	3.09
2013	3.12
2014	3.15
2015	3.17
2016	3.2