Year	Cases per 100,000
1990	16.38
1991	16.77
1992	17.18
1993	17.6
1994	18.03
1995	18.48
1996	18.84
1997	19.22
1998	19.62
1999	20.02
2000	20.44
2001	20.41
2002	20.39
2003	20.37
2004	20.36
2005	20.35
2006	21.03
2007	21.73
2008	22.46
2009	23.23
2010	24.02
2011	24.31
2012	24.6
2013	24.9
2014	25.2
2015	25.51
2016	25.83