Year	Cases per 100,000
1990	98.94
1991	96.91
1992	97.01
1993	95.7
1994	93.67
1995	93.7
1996	92.66
1997	91.85
1998	88.33
1999	85.43
2000	84.25
2001	82.5
2002	81.02
2003	79.76
2004	77
2005	75.24
2006	73.71
2007	72.16
2008	69.46
2009	68.63
2010	67.33
2011	66.17
2012	63.79
2013	62.43
2014	64.01
2015	62.03
2016	60.36