Year	Cases per 100,000
1990	17.14
1991	16.88
1992	16.61
1993	16.23
1994	15.84
1995	15.64
1996	15.57
1997	15.43
1998	15.52
1999	15.88
2000	15.9
2001	16.08
2002	16.14
2003	16.83
2004	17.21
2005	17.5
2006	16.64
2007	15.74
2008	15.03
2009	14.27
2010	13.85
2011	13.63
2012	13.78
2013	14.01
2014	14.43
2015	14.53
2016	14.69