Year	Cases per 100,000
1990	32.72
1991	32.84
1992	33.64
1993	34.42
1994	35.06
1995	36.06
1996	37.36
1997	37.24
1998	36.88
1999	35.72
2000	35.41
2001	35.71
2002	35.89
2003	35.32
2004	33.99
2005	33.78
2006	32.98
2007	32.17
2008	32
2009	31.58
2010	30.15
2011	28.18
2012	27.96
2013	27.89
2014	27.72
2015	26.81
2016	26.27