Year	Cases per 100,000
1990	4.22
1991	4.35
1992	4.48
1993	4.63
1994	4.77
1995	4.93
1996	5.03
1997	5.13
1998	5.23
1999	5.33
2000	5.44
2001	5.48
2002	5.53
2003	5.57
2004	5.62
2005	5.66
2006	5.77
2007	5.88
2008	5.99
2009	6.11
2010	6.23
2011	6.28
2012	6.34
2013	6.4
2014	6.46
2015	6.52
2016	6.58