Year	Cases per 100,000
1990	2.06
1991	2.08
1992	2.1
1993	2.12
1994	2.14
1995	2.17
1996	2.2
1997	2.24
1998	2.27
1999	2.31
2000	2.35
2001	2.35
2002	2.36
2003	2.37
2004	2.38
2005	2.39
2006	2.39
2007	2.4
2008	2.4
2009	2.41
2010	2.42
2011	2.44
2012	2.46
2013	2.49
2014	2.51
2015	2.54
2016	2.57