Year	Cases per 100,000
1990	14.21
1991	14.3
1992	14.4
1993	14.5
1994	14.6
1995	14.72
1996	14.44
1997	14.17
1998	13.92
1999	13.67
2000	13.43
2001	13.3
2002	13.18
2003	13.06
2004	12.94
2005	12.83
2006	12.81
2007	12.8
2008	12.78
2009	12.77
2010	12.76
2011	12.88
2012	13.01
2013	13.13
2014	13.26
2015	13.39
2016	13.52