Year	Cases per 100,000
1990	28.98
1991	29.7
1992	30.44
1993	31.21
1994	32.01
1995	32.83
1996	31.48
1997	30.19
1998	28.96
1999	27.78
2000	26.65
2001	26.72
2002	26.8
2003	26.88
2004	26.96
2005	27.04
2006	26.87
2007	26.69
2008	26.53
2009	26.36
2010	26.2
2011	26.03
2012	25.87
2013	25.71
2014	25.55
2015	25.39
2016	25.24