Year	Cases per 100,000
1990	30.54
1991	29.64
1992	29.34
1993	28.67
1994	28.06
1995	27.27
1996	27.11
1997	26.65
1998	25.54
1999	24.55
2000	23.82
2001	23.4
2002	22.86
2003	22.21
2004	21.36
2005	20.58
2006	19.9
2007	19.42
2008	18.9
2009	18.42
2010	18.27
2011	17.88
2012	17.1
2013	16.48
2014	16.8
2015	16.69
2016	16.45