Year	Cases per 100,000
1990	12.95
1991	13.48
1992	14.07
1993	14.68
1994	15.33
1995	16.03
1996	17.09
1997	18.25
1998	19.5
1999	20.84
2000	22.31
2001	23.36
2002	24.48
2003	25.65
2004	26.89
2005	28.21
2006	28.7
2007	29.19
2008	29.71
2009	30.23
2010	30.78
2011	30.99
2012	31.21
2013	31.44
2014	31.67
2015	31.91
2016	32.17