Year	Cases per 100,000
1990	5.04
1991	5.18
1992	5.33
1993	5.49
1994	5.65
1995	5.82
1996	5.91
1997	6
1998	6.09
1999	6.19
2000	6.29
2001	6.34
2002	6.38
2003	6.43
2004	6.48
2005	6.54
2006	6.55
2007	6.55
2008	6.57
2009	6.58
2010	6.6
2011	6.58
2012	6.57
2013	6.56
2014	6.55
2015	6.54
2016	6.54