Year	Cases per 100,000
1990	6.48
1991	6.41
1992	6.35
1993	6.28
1994	6.22
1995	6.15
1996	6.12
1997	6.1
1998	6.07
1999	6.04
2000	6.02
2001	6.11
2002	6.2
2003	6.29
2004	6.39
2005	6.49
2006	6.6
2007	6.72
2008	6.84
2009	6.97
2010	7.1
2011	7.14
2012	7.19
2013	7.24
2014	7.29
2015	7.34
2016	7.39