Year	Cases per 100,000
1990	2.35
1991	2.44
1992	2.54
1993	2.64
1994	2.75
1995	2.86
1996	2.98
1997	3.11
1998	3.24
1999	3.38
2000	3.53
2001	3.73
2002	3.94
2003	4.17
2004	4.41
2005	4.67
2006	4.9
2007	5.13
2008	5.38
2009	5.65
2010	5.92
2011	6.06
2012	6.21
2013	6.36
2014	6.51
2015	6.67
2016	6.84