Year	Cases per 100,000
1990	4.67
1991	4.81
1992	4.95
1993	5.09
1994	5.24
1995	5.4
1996	5.52
1997	5.65
1998	5.77
1999	5.9
2000	6.04
2001	6.14
2002	6.25
2003	6.36
2004	6.47
2005	6.59
2006	6.68
2007	6.76
2008	6.85
2009	6.95
2010	7.04
2011	7.14
2012	7.25
2013	7.35
2014	7.46
2015	7.57
2016	7.68