Year	Cases per 100,000
1990	6.51
1991	6.52
1992	6.55
1993	6.58
1994	6.6
1995	6.65
1996	6.62
1997	6.62
1998	6.61
1999	6.6
2000	6.61
2001	6.59
2002	6.58
2003	6.58
2004	6.58
2005	6.6
2006	6.64
2007	6.65
2008	6.69
2009	6.73
2010	6.78
2011	6.78
2012	6.8
2013	6.82
2014	6.84
2015	6.86
2016	6.9