Year	Cases per 100,000
1990	2.38
1991	2.45
1992	2.52
1993	2.6
1994	2.68
1995	2.76
1996	2.91
1997	3.08
1998	3.25
1999	3.43
2000	3.63
2001	3.83
2002	4.05
2003	4.28
2004	4.53
2005	4.8
2006	4.95
2007	5.1
2008	5.26
2009	5.43
2010	5.61
2011	5.61
2012	5.61
2013	5.61
2014	5.61
2015	5.61
2016	5.62