Year	Cases per 100,000
1990	4.61
1991	4.71
1992	4.8
1993	4.9
1994	5.01
1995	5.12
1996	5.2
1997	5.29
1998	5.38
1999	5.48
2000	5.57
2001	5.55
2002	5.52
2003	5.49
2004	5.47
2005	5.44
2006	5.43
2007	5.41
2008	5.39
2009	5.38
2010	5.36
2011	5.34
2012	5.33
2013	5.31
2014	5.29
2015	5.28
2016	5.26