Year	Cases per 100,000
1990	41.13
1991	41.57
1992	40.64
1993	42.97
1994	42.9
1995	41.27
1996	38.02
1997	35.4
1998	33.97
1999	32.98
2000	31.76
2001	32.42
2002	31.53
2003	31.02
2004	30.83
2005	32.18
2006	32.33
2007	33.43
2008	31.38
2009	28.78
2010	28.81
2011	28
2012	27.52
2013	27.54
2014	26.43
2015	26.03
2016	26