Year	Cases per 100,000
1990	7.57
1991	7.63
1992	7.7
1993	7.77
1994	7.84
1995	7.92
1996	7.9
1997	7.9
1998	7.89
1999	7.88
2000	7.87
2001	7.77
2002	7.68
2003	7.58
2004	7.49
2005	7.4
2006	7.38
2007	7.36
2008	7.34
2009	7.32
2010	7.31
2011	7.35
2012	7.39
2013	7.43
2014	7.48
2015	7.52
2016	7.57