Year	Cases per 100,000
1990	7.43
1991	7.64
1992	7.79
1993	7.4
1994	7.23
1995	7.33
1996	6.97
1997	7.05
1998	6.88
1999	6.72
2000	6.8
2001	6.78
2002	6.68
2003	6.71
2004	6.6
2005	6.51
2006	6.58
2007	6.45
2008	6.36
2009	6.28
2010	6.26
2011	6.29
2012	6.42
2013	6.53
2014	6.58
2015	6.75
2016	6.89