Year	Cases per 100,000
1990	17.87
1991	17.54
1992	17.45
1993	17.5
1994	17.58
1995	17.65
1996	17.44
1997	17.28
1998	17.12
1999	17.2
2000	17.24
2001	17.58
2002	18.05
2003	19
2004	20.38
2005	21.21
2006	22.07
2007	22.45
2008	23.27
2009	23.9
2010	24.33
2011	24.22
2012	23.97
2013	23.68
2014	23.51
2015	23.4
2016	23.38