Year	Cases per 100,000
1990	3.63
1991	3.62
1992	3.61
1993	3.6
1994	3.6
1995	3.6
1996	3.6
1997	3.62
1998	3.64
1999	3.71
2000	3.78
2001	3.83
2002	3.88
2003	3.92
2004	3.96
2005	3.99
2006	4.06
2007	4.13
2008	4.2
2009	4.27
2010	4.33
2011	4.37
2012	4.41
2013	4.45
2014	4.48
2015	4.52
2016	4.56