Year	Cases per 100,000
1990	3.14
1991	3.22
1992	3.31
1993	3.4
1994	3.49
1995	3.59
1996	3.65
1997	3.72
1998	3.79
1999	3.86
2000	3.93
2001	3.97
2002	4
2003	4.04
2004	4.08
2005	4.12
2006	4.12
2007	4.12
2008	4.12
2009	4.12
2010	4.13
2011	4.17
2012	4.22
2013	4.27
2014	4.32
2015	4.38
2016	4.43