Year	Cases per 100,000
1990	4.98
1991	4.93
1992	4.88
1993	4.84
1994	4.8
1995	4.76
1996	4.71
1997	4.67
1998	4.63
1999	4.59
2000	4.56
2001	4.5
2002	4.45
2003	4.41
2004	4.36
2005	4.32
2006	4.3
2007	4.29
2008	4.27
2009	4.26
2010	4.24
2011	4.26
2012	4.28
2013	4.3
2014	4.32
2015	4.34
2016	4.36