Year	Cases per 100,000
1990	13.94
1991	14.33
1992	14.73
1993	15.15
1994	15.58
1995	16.03
1996	16.25
1997	16.47
1998	16.7
1999	16.94
2000	17.18
2001	17.39
2002	17.62
2003	17.85
2004	18.08
2005	18.32
2006	18.71
2007	19.1
2008	19.51
2009	19.93
2010	20.36
2011	20.74
2012	21.13
2013	21.52
2014	21.93
2015	22.34
2016	22.77