Year	Cases per 100,000
1990	11.58
1991	11.84
1992	12.11
1993	12.39
1994	12.68
1995	12.97
1996	13.27
1997	13.59
1998	13.91
1999	14.24
2000	14.58
2001	15.14
2002	15.72
2003	16.34
2004	16.98
2005	17.66
2006	17.91
2007	18.17
2008	18.43
2009	18.7
2010	18.98
2011	19.14
2012	19.31
2013	19.49
2014	19.66
2015	19.85
2016	20.03