Year	Cases per 100,000
1990	3.86
1991	3.88
1992	3.91
1993	3.94
1994	3.96
1995	3.99
1996	4.02
1997	4.04
1998	4.07
1999	4.1
2000	4.13
2001	4.15
2002	4.17
2003	4.2
2004	4.22
2005	4.25
2006	4.24
2007	4.23
2008	4.22
2009	4.21
2010	4.21
2011	4.23
2012	4.25
2013	4.26
2014	4.28
2015	4.3
2016	4.32