Year	Cases per 100,000
1990	4.68
1991	4.67
1992	4.67
1993	4.69
1994	4.69
1995	4.71
1996	4.73
1997	4.75
1998	4.77
1999	4.74
2000	4.88
2001	4.7
2002	4.61
2003	4.61
2004	4.49
2005	4.43
2006	4.46
2007	4.56
2008	4.74
2009	4.92
2010	5.18
2011	5.15
2012	5.13
2013	5.1
2014	5.07
2015	5.04
2016	5.02