Year	Cases per 100,000
1990	5.13
1991	5.22
1992	5.32
1993	5.42
1994	5.53
1995	5.64
1996	5.72
1997	5.81
1998	5.9
1999	6
2000	6.09
2001	6.2
2002	6.33
2003	6.48
2004	6.65
2005	6.84
2006	6.89
2007	6.93
2008	6.98
2009	7.04
2010	7.11
2011	7.17
2012	7.24
2013	7.31
2014	7.38
2015	7.45
2016	7.52