Year	Cases per 100,000
1990	5
1991	5.3
1992	5.63
1993	5.97
1994	6.34
1995	6.74
1996	6.73
1997	6.73
1998	6.73
1999	6.73
2000	6.73
2001	6.86
2002	7
2003	7.14
2004	7.28
2005	7.43
2006	7.57
2007	7.71
2008	7.86
2009	8.01
2010	8.16
2011	8.39
2012	8.63
2013	8.88
2014	9.14
2015	9.4
2016	9.67