Year	Cases per 100,000
1990	14.18
1991	14.35
1992	14.89
1993	15.39
1994	16.52
1995	18.47
1996	17.86
1997	17.72
1998	17.42
1999	16.85
2000	16.68
2001	16.19
2002	15.74
2003	15.09
2004	14.71
2005	14.29
2006	14.03
2007	13.65
2008	13.26
2009	12.87
2010	12.76
2011	12.64
2012	12.59
2013	12.47
2014	12.36
2015	12.25
2016	12.17