Year	Cases per 100,000
1990	4.56
1991	4.59
1992	4.62
1993	4.65
1994	4.68
1995	4.72
1996	4.75
1997	4.78
1998	4.81
1999	4.85
2000	4.89
2001	4.85
2002	4.81
2003	4.78
2004	4.74
2005	4.71
2006	4.65
2007	4.58
2008	4.52
2009	4.46
2010	4.41
2011	4.37
2012	4.34
2013	4.31
2014	4.28
2015	4.25
2016	4.22