Year	Cases per 100,000
1990	95.1
1991	98.42
1992	101.19
1993	103.35
1994	103.79
1995	104.09
1996	104.84
1997	104.47
1998	103.7
1999	102.51
2000	101.95
2001	101.47
2002	101.14
2003	101.81
2004	101.9
2005	100.88
2006	100.49
2007	100.19
2008	99.02
2009	97.22
2010	94.72
2011	90.39
2012	86.75
2013	83.43
2014	81.28
2015	79.17
2016	77.16