Year	Cases per 100,000
1990	5.58
1991	5.61
1992	5.66
1993	5.71
1994	5.77
1995	5.83
1996	5.85
1997	5.87
1998	5.9
1999	5.93
2000	5.98
2001	5.96
2002	5.96
2003	5.97
2004	5.97
2005	5.99
2006	5.97
2007	5.94
2008	5.93
2009	5.91
2010	5.92
2011	5.87
2012	5.85
2013	5.82
2014	5.79
2015	5.77
2016	5.75