Year	Cases per 100,000
1990	6.24
1991	6.27
1992	6.29
1993	6.32
1994	6.35
1995	6.39
1996	6.39
1997	6.4
1998	6.41
1999	6.43
2000	6.44
2001	6.46
2002	6.49
2003	6.52
2004	6.55
2005	6.58
2006	6.6
2007	6.63
2008	6.66
2009	6.69
2010	6.72
2011	6.73
2012	6.75
2013	6.76
2014	6.78
2015	6.79
2016	6.81