Year	Cases per 100,000
1990	4.59
1991	4.66
1992	4.75
1993	4.82
1994	4.85
1995	4.88
1996	4.95
1997	4.99
1998	5.09
1999	5.07
2000	5.14
2001	4.99
2002	4.93
2003	4.89
2004	4.84
2005	4.79
2006	4.77
2007	4.74
2008	4.77
2009	4.8
2010	4.81
2011	4.83
2012	4.87
2013	4.88
2014	4.9
2015	4.93
2016	4.95