Year	Cases per 100,000
1990	7.23
1991	7.01
1992	6.74
1993	6.52
1994	6.36
1995	6.17
1996	6.15
1997	6.02
1998	5.96
1999	5.93
2000	6.02
2001	6.13
2002	6.34
2003	6.45
2004	6.54
2005	6.65
2006	6.83
2007	7.03
2008	7.14
2009	7.29
2010	7.45
2011	7.58
2012	7.64
2013	7.73
2014	7.77
2015	7.8
2016	7.82