Year	Cases per 100,000
1990	4.66
1991	4.7
1992	4.74
1993	4.79
1994	4.83
1995	4.88
1996	4.93
1997	4.98
1998	5.03
1999	5.09
2000	5.14
2001	5.19
2002	5.25
2003	5.3
2004	5.36
2005	5.42
2006	5.41
2007	5.39
2008	5.38
2009	5.36
2010	5.35
2011	5.33
2012	5.31
2013	5.29
2014	5.27
2015	5.25
2016	5.23