Year	Cases per 100,000
1990	5.37
1991	5.53
1992	5.7
1993	5.88
1994	6.06
1995	6.25
1996	6.45
1997	6.65
1998	6.87
1999	7.09
2000	7.33
2001	7.41
2002	7.5
2003	7.59
2004	7.69
2005	7.78
2006	7.86
2007	7.95
2008	8.04
2009	8.13
2010	8.22
2011	8.27
2012	8.31
2013	8.36
2014	8.41
2015	8.45
2016	8.5