Year	Cases per 100,000
1990	7.68
1991	7.71
1992	7.75
1993	7.74
1994	7.82
1995	7.52
1996	7.2
1997	6.97
1998	6.59
1999	6.28
2000	6.15
2001	6
2002	5.91
2003	6.03
2004	6.01
2005	5.94
2006	5.9
2007	5.76
2008	5.62
2009	5.51
2010	5.42
2011	5.28
2012	5.18
2013	5.23
2014	5.14
2015	5.18
2016	5.12