Year	Cases per 100,000
1990	16.79
1991	17.35
1992	17.97
1993	18.64
1994	19.37
1995	20.16
1996	20.25
1997	20.35
1998	20.45
1999	20.56
2000	20.68
2001	21.16
2002	21.67
2003	22.19
2004	22.74
2005	23.32
2006	24.39
2007	25.53
2008	26.78
2009	28.11
2010	29.56
2011	30.2
2012	30.86
2013	31.56
2014	32.28
2015	33.03
2016	33.81