Year	Cases per 100,000
1990	27.78
1991	27.86
1992	27.97
1993	28.15
1994	28.31
1995	28.61
1996	28.88
1997	29.05
1998	29.23
1999	29.46
2000	29.56
2001	29.71
2002	29.92
2003	30.02
2004	30.07
2005	30.12
2006	30.06
2007	29.9
2008	29.67
2009	29.42
2010	29.16
2011	28.97
2012	28.77
2013	28.53
2014	28.35
2015	28.2
2016	27.82