Year	Cases per 100,000
1990	4.71
1991	4.65
1992	4.6
1993	4.53
1994	4.47
1995	4.42
1996	4.38
1997	4.31
1998	4.27
1999	4.24
2000	4.22
2001	4.19
2002	4.16
2003	4.14
2004	4.11
2005	4.09
2006	4.12
2007	4.14
2008	4.18
2009	4.21
2010	4.26
2011	4.36
2012	4.47
2013	4.59
2014	4.71
2015	4.84
2016	4.96