Year	Cases per 100,000
1990	19.67
1991	20.46
1992	21.28
1993	22.14
1994	23.05
1995	23.99
1996	24.87
1997	25.79
1998	26.74
1999	27.74
2000	28.78
2001	29.39
2002	30.03
2003	30.68
2004	31.34
2005	32.03
2006	32.59
2007	33.16
2008	33.75
2009	34.36
2010	34.99
2011	34.81
2012	34.64
2013	34.48
2014	34.31
2015	34.15
2016	34