Year	Cases per 100,000
1990	20.02
1991	20.09
1992	20.17
1993	20.25
1994	20.33
1995	20.41
1996	21.21
1997	22.05
1998	22.92
1999	23.84
2000	24.8
2001	26.15
2002	27.6
2003	29.13
2004	30.75
2005	32.48
2006	33.11
2007	33.75
2008	34.41
2009	35.08
2010	35.77
2011	35.96
2012	36.15
2013	36.35
2014	36.55
2015	36.75
2016	36.96