Year	Cases per 100,000
1990	17.27
1991	17.5
1992	17.73
1993	17.97
1994	18.22
1995	18.47
1996	18.93
1997	19.41
1998	19.91
1999	20.42
2000	20.96
2001	21.66
2002	22.39
2003	23.16
2004	23.96
2005	24.81
2006	25.92
2007	27.09
2008	28.33
2009	29.65
2010	31.05
2011	31.82
2012	32.61
2013	33.44
2014	34.28
2015	35.15
2016	36.06