Year	Cases per 100,000
1990	12.74
1991	12.98
1992	13.18
1993	13.33
1994	13.5
1995	13.7
1996	13.98
1997	14.31
1998	14.65
1999	15.34
2000	16.16
2001	16.75
2002	17.42
2003	18.11
2004	18.89
2005	19.65
2006	20.3
2007	20.89
2008	21.55
2009	22.2
2010	22.75
2011	22.9
2012	22.96
2013	22.97
2014	22.85
2015	22.63
2016	22.34