Year	Cases per 100,000
1990	4.04
1991	4.12
1992	4.2
1993	4.29
1994	4.39
1995	4.49
1996	4.64
1997	4.8
1998	4.97
1999	5.14
2000	5.32
2001	5.43
2002	5.55
2003	5.67
2004	5.79
2005	5.92
2006	6.04
2007	6.16
2008	6.28
2009	6.41
2010	6.54
2011	6.69
2012	6.84
2013	7
2014	7.16
2015	7.33
2016	7.5