Year	Cases per 100,000
1990	3.07
1991	3.12
1992	3.2
1993	3.29
1994	3.42
1995	3.6
1996	3.92
1997	4.08
1998	4.34
1999	4.26
2000	4.38
2001	4.59
2002	4.76
2003	4.88
2004	4.83
2005	4.93
2006	4.89
2007	4.75
2008	4.59
2009	4.33
2010	4.15
2011	4.1
2012	4.13
2013	4.2
2014	4.29
2015	4.37
2016	4.45