Year	Cases per 100,000
1990	4.96
1991	5.1
1992	5.25
1993	5.4
1994	5.56
1995	5.72
1996	5.77
1997	5.83
1998	5.89
1999	5.94
2000	6
2001	6.25
2002	6.51
2003	6.78
2004	7.07
2005	7.36
2006	7.52
2007	7.68
2008	7.84
2009	8.01
2010	8.18
2011	8.36
2012	8.55
2013	8.73
2014	8.93
2015	9.12
2016	9.33