Year	Cases per 100,000
1990	4.79
1991	4.8
1992	4.81
1993	4.81
1994	4.82
1995	4.84
1996	4.84
1997	4.85
1998	4.86
1999	4.88
2000	4.89
2001	4.89
2002	4.89
2003	4.9
2004	4.91
2005	4.92
2006	4.87
2007	4.83
2008	4.78
2009	4.74
2010	4.71
2011	4.68
2012	4.66
2013	4.64
2014	4.62
2015	4.6
2016	4.58