Year	Cases per 100,000
1980	28.55364
1981	23.81727
1982	22.37091
1983	25.19455
1984	23.13818
1985	26.35182
1986	23.00545
1987	24.61909
1988	22.93273
1989	24.63636
1990	24.37
1991	24.06
1992	23.45
1993	23.16
1994	22.45
1995	22
1996	21.3
1997	20.04
1998	19.53
1999	18.65
2000	17.84
2001	17.23
2002	16.35
2003	15.5
2004	15.1
2005	14.39
2006	13.75
2007	13.23
2008	13.2
2009	13.04
2010	13.02
2011	12.88
2012	13.11
2013	13.06
2014	13.02
2015	13.19
2016	13.25