Year	Cases per 100,000
1990	5.34
1991	5.5
1992	5.67
1993	5.84
1994	6.02
1995	6.2
1996	6.7
1997	7.24
1998	7.84
1999	8.49
2000	9.2
2001	9.49
2002	9.79
2003	10.1
2004	10.42
2005	10.75
2006	10.86
2007	10.96
2008	11.07
2009	11.18
2010	11.3
2011	11.7
2012	12.12
2013	12.55
2014	13
2015	13.47
2016	13.96