Year	Cases per 100,000
1990	4.78
1991	4.68
1992	4.59
1993	4.51
1994	4.42
1995	4.34
1996	4.42
1997	4.49
1998	4.57
1999	4.66
2000	4.74
2001	4.68
2002	4.61
2003	4.55
2004	4.49
2005	4.44
2006	4.43
2007	4.43
2008	4.43
2009	4.43
2010	4.43
2011	4.5
2012	4.57
2013	4.64
2014	4.71
2015	4.78
2016	4.86