Year	Cases per 100,000
1990	6.37
1991	6.41
1992	6.45
1993	6.49
1994	6.54
1995	6.59
1996	6.69
1997	6.8
1998	6.91
1999	7.03
2000	7.15
2001	7.43
2002	7.72
2003	8.03
2004	8.35
2005	8.69
2006	8.65
2007	8.62
2008	8.58
2009	8.55
2010	8.51
2011	8.57
2012	8.62
2013	8.67
2014	8.73
2015	8.78
2016	8.84