Year	Cases per 100,000
1990	3.6
1991	3.58
1992	3.58
1993	3.57
1994	3.63
1995	3.68
1996	3.76
1997	3.74
1998	3.68
1999	3.72
2000	3.84
2001	3.88
2002	3.95
2003	4.09
2004	4.18
2005	4.22
2006	4.16
2007	4.16
2008	4.17
2009	4.18
2010	4.13
2011	4.15
2012	4.2
2013	4.19
2014	4.17
2015	4.16
2016	4.15