Year	Cases per 100,000
1990	10.93
1991	10.92
1992	10.91
1993	10.91
1994	10.91
1995	10.92
1996	10.86
1997	10.8
1998	10.75
1999	10.7
2000	10.65
2001	10.63
2002	10.61
2003	10.59
2004	10.57
2005	10.55
2006	10.59
2007	10.63
2008	10.67
2009	10.71
2010	10.75
2011	10.78
2012	10.81
2013	10.84
2014	10.87
2015	10.9
2016	10.93