Year	Cases per 100,000
1990	16.07
1991	15.44
1992	15.11
1993	14.72
1994	14.5
1995	13.88
1996	13.29
1997	12.93
1998	12.54
1999	12.64
2000	12.62
2001	12.67
2002	12.68
2003	12.73
2004	12.78
2005	12.84
2006	12.89
2007	12.9
2008	12.89
2009	12.88
2010	12.85
2011	12.82
2012	12.78
2013	12.75
2014	12.72
2015	12.71
2016	12.71