Year	Cases per 100,000
1990	5.73
1991	5.68
1992	5.66
1993	5.67
1994	5.66
1995	5.67
1996	5.6
1997	5.49
1998	5.45
1999	5.45
2000	5.42
2001	5.4
2002	5.33
2003	5.23
2004	5.14
2005	4.99
2006	4.84
2007	4.77
2008	4.79
2009	4.81
2010	4.83
2011	4.81
2012	4.8
2013	4.79
2014	4.8
2015	4.85
2016	4.87