Year	Cases per 100,000
1990	16.16
1991	16.31
1992	16.46
1993	16.62
1994	16.78
1995	16.94
1996	17.35
1997	17.78
1998	18.22
1999	18.68
2000	19.16
2001	20.13
2002	21.16
2003	22.25
2004	23.42
2005	24.66
2006	25.53
2007	26.42
2008	27.36
2009	28.34
2010	29.36
2011	29.7
2012	30.05
2013	30.4
2014	30.77
2015	31.13
2016	31.51