Year	Cases per 100,000
1990	4.95
1991	4.93
1992	4.89
1993	4.84
1994	4.79
1995	4.73
1996	4.68
1997	4.62
1998	4.45
1999	4.68
2000	4.76
2001	4.91
2002	5.08
2003	5.23
2004	5.21
2005	5.24
2006	5.23
2007	5.3
2008	5.34
2009	5.41
2010	5.61
2011	5.81
2012	5.84
2013	5.81
2014	5.94
2015	5.98
2016	5.95