Year	Cases per 100,000
1990	35.8
1991	35.81
1992	35.8
1993	35.75
1994	35.89
1995	35.95
1996	36
1997	36
1998	35.98
1999	35.62
2000	35.38
2001	35.36
2002	35.09
2003	35.05
2004	34.95
2005	34.87
2006	34.67
2007	34.41
2008	34.21
2009	33.96
2010	33.75
2011	33.72
2012	33.87
2013	34.07
2014	34.04
2015	34.03
2016	34.1