Year	Cases per 100,000
1990	13.4
1991	13.74
1992	14.1
1993	14.46
1994	14.84
1995	15.23
1996	15.45
1997	15.68
1998	15.92
1999	16.16
2000	16.41
2001	16.74
2002	17.08
2003	17.44
2004	17.8
2005	18.18
2006	18.68
2007	19.2
2008	19.73
2009	20.28
2010	20.85
2011	21.3
2012	21.76
2013	22.23
2014	22.72
2015	23.22
2016	23.73