Year	Cases per 100,000
1990	8.04
1991	8.66
1992	9.34
1993	10.07
1994	10.88
1995	11.75
1996	12.51
1997	13.32
1998	14.18
1999	15.11
2000	16.1
2001	16.52
2002	16.95
2003	17.4
2004	17.87
2005	18.35
2006	18.83
2007	19.34
2008	19.86
2009	20.39
2010	20.94
2011	20.98
2012	21.02
2013	21.06
2014	21.11
2015	21.15
2016	21.19