Year	Cases per 100,000
1990	30.64
1991	29.07
1992	27.62
1993	26.27
1994	25.01
1995	23.85
1996	24.27
1997	24.71
1998	25.18
1999	25.67
2000	26.2
2001	27.41
2002	28.73
2003	30.13
2004	31.63
2005	33.24
2006	32.52
2007	31.81
2008	31.13
2009	30.48
2010	29.85
2011	29.56
2012	29.3
2013	29.03
2014	28.77
2015	28.52
2016	28.28