Year	Cases per 100,000
1990	12.84
1991	13.63
1992	14.4
1993	15.21
1994	16.1
1995	17.1
1996	18.01
1997	19.26
1998	20.83
1999	21.57
2000	22.71
2001	23.46
2002	23.97
2003	24.4
2004	24.93
2005	25.45
2006	25.68
2007	25.94
2008	25.91
2009	25.95
2010	26.25
2011	26.56
2012	26.86
2013	27.15
2014	27.4
2015	27.63
2016	27.78