Year	Cases per 100,000
1990	5.29
1991	5.5
1992	5.72
1993	5.96
1994	6.2
1995	6.46
1996	6.42
1997	6.39
1998	6.35
1999	6.32
2000	6.28
2001	6.34
2002	6.39
2003	6.44
2004	6.49
2005	6.55
2006	6.63
2007	6.71
2008	6.79
2009	6.87
2010	6.96
2011	7.07
2012	7.2
2013	7.32
2014	7.44
2015	7.57
2016	7.7