Year	Cases per 100,000
1990	25.9
1991	26.17
1992	25.96
1993	25.69
1994	25.35
1995	25.01
1996	24.79
1997	24.58
1998	24.12
1999	23.62
2000	23.77
2001	23.51
2002	23.44
2003	23.65
2004	23.9
2005	24.46
2006	25.03
2007	25.69
2008	26.08
2009	26.38
2010	26.46
2011	27.1
2012	27.46
2013	27.46
2014	27.86
2015	28.48
2016	28.75