Year	Cases per 100,000
1990	3.12
1991	3.13
1992	3.14
1993	3.15
1994	3.17
1995	3.17
1996	3.17
1997	3.16
1998	3.16
1999	3.15
2000	3.14
2001	3.14
2002	3.15
2003	3.16
2004	3.17
2005	3.18
2006	3.24
2007	3.3
2008	3.36
2009	3.43
2010	3.5
2011	3.54
2012	3.59
2013	3.64
2014	3.68
2015	3.73
2016	3.78