Year	Cases per 100,000
1990	8.02
1991	7.93
1992	7.84
1993	7.75
1994	7.66
1995	7.57
1996	7.56
1997	7.57
1998	7.58
1999	7.63
2000	7.71
2001	7.75
2002	7.8
2003	7.85
2004	7.89
2005	7.94
2006	7.88
2007	7.81
2008	7.75
2009	7.68
2010	7.63
2011	7.6
2012	7.56
2013	7.52
2014	7.48
2015	7.43
2016	7.39