Year	Cases per 100,000
1990	3.03
1991	3.12
1992	3.21
1993	3.3
1994	3.39
1995	3.49
1996	3.45
1997	3.41
1998	3.36
1999	3.32
2000	3.29
2001	3.31
2002	3.34
2003	3.38
2004	3.41
2005	3.45
2006	3.47
2007	3.5
2008	3.53
2009	3.57
2010	3.61
2011	3.66
2012	3.71
2013	3.77
2014	3.82
2015	3.88
2016	3.94