Year	Cases per 100,000
1990	4.47
1991	4.57
1992	4.63
1993	4.64
1994	4.61
1995	4.76
1996	4.78
1997	4.78
1998	5.09
1999	4.83
2000	4.66
2001	4.45
2002	4.45
2003	4.46
2004	4.49
2005	4.55
2006	4.71
2007	4.83
2008	4.85
2009	4.93
2010	4.89
2011	4.99
2012	5.02
2013	5.03
2014	5.05
2015	5.06
2016	5.03