Year	Cases per 100,000
1990	6.31
1991	6.31
1992	6.32
1993	6.33
1994	6.33
1995	6.35
1996	6.35
1997	6.36
1998	6.37
1999	6.37
2000	6.39
2001	6.36
2002	6.34
2003	6.32
2004	6.3
2005	6.29
2006	6.29
2007	6.29
2008	6.3
2009	6.31
2010	6.32
2011	6.32
2012	6.33
2013	6.33
2014	6.34
2015	6.34
2016	6.36