Year	Cases per 100,000
1990	4.22
1991	4.27
1992	4.33
1993	4.38
1994	4.44
1995	4.49
1996	4.62
1997	4.76
1998	4.9
1999	5.05
2000	5.21
2001	5.3
2002	5.4
2003	5.5
2004	5.61
2005	5.73
2006	5.65
2007	5.57
2008	5.49
2009	5.42
2010	5.35
2011	5.33
2012	5.32
2013	5.31
2014	5.29
2015	5.28
2016	5.27