Year	Cases per 100,000
1990	2.63
1991	2.66
1992	2.68
1993	2.71
1994	2.74
1995	2.78
1996	2.81
1997	2.84
1998	2.88
1999	2.92
2000	2.96
2001	2.93
2002	2.91
2003	2.88
2004	2.85
2005	2.82
2006	2.8
2007	2.77
2008	2.75
2009	2.73
2010	2.71
2011	2.7
2012	2.7
2013	2.69
2014	2.68
2015	2.67
2016	2.67