Year	Cases per 100,000
1990	5.38
1991	5.59
1992	5.7
1993	5.49
1994	5.36
1995	5.53
1996	5.41
1997	5.28
1998	5.15
1999	5.03
2000	4.99
2001	4.89
2002	4.86
2003	4.88
2004	4.81
2005	4.88
2006	5.01
2007	5.11
2008	5.17
2009	5.3
2010	5.48
2011	5.6
2012	5.64
2013	5.74
2014	5.76
2015	5.83
2016	5.88