Year	Cases per 100,000
1990	5.23
1991	5.25
1992	5.28
1993	5.32
1994	5.36
1995	5.4
1996	5.53
1997	5.69
1998	5.87
1999	6.09
2000	6.37
2001	6.71
2002	7.11
2003	7.58
2004	8.06
2005	8.63
2006	8.51
2007	8.41
2008	8.34
2009	8.25
2010	8.19
2011	8.29
2012	8.42
2013	8.56
2014	8.68
2015	8.8
2016	8.92