Year	Cases per 100,000
1990	45.28
1991	44.4
1992	45.47
1993	46.41
1994	48.22
1995	46.78
1996	44.22
1997	41.25
1998	38.18
1999	35.85
2000	33.52
2001	32.38
2002	31.97
2003	32.04
2004	32.32
2005	33.14
2006	33.46
2007	33.7
2008	33.09
2009	32.55
2010	31.64
2011	30.86
2012	29.9
2013	29.05
2014	28.19
2015	27.45
2016	26.68