Year	Cases per 100,000
1990	40.92
1991	41.23
1992	42.12
1993	44.82
1994	45.88
1995	42.47
1996	36.98
1997	34.78
1998	34.9
1999	32.15
2000	31.18
2001	32.19
2002	31.55
2003	31.01
2004	31
2005	32.3
2006	33.11
2007	32.7
2008	31.1
2009	29.28
2010	28.78
2011	27.8
2012	27.72
2013	26.87
2014	25.91
2015	25.55
2016	25.33