Year	Cases per 100,000
1990	3
1991	3.01
1992	3.02
1993	3.02
1994	3.03
1995	3.05
1996	3.06
1997	3.07
1998	3.09
1999	3.09
2000	3.09
2001	3.11
2002	3.14
2003	3.16
2004	3.19
2005	3.22
2006	3.24
2007	3.26
2008	3.28
2009	3.3
2010	3.33
2011	3.37
2012	3.42
2013	3.47
2014	3.52
2015	3.57
2016	3.62