Year	Cases per 100,000
1990	27.27
1991	27.14
1992	27.17
1993	27.21
1994	27.76
1995	28.38
1996	28.99
1997	30.41
1998	30.77
1999	31.6
2000	32.01
2001	32.89
2002	34.09
2003	34.42
2004	34.81
2005	35
2006	35.05
2007	35.5
2008	35.47
2009	35.45
2010	35.33
2011	35
2012	34.49
2013	33.88
2014	33.4
2015	33.26
2016	33.12