Year	Cases per 100,000
1990	19.98
1991	20.33
1992	20.64
1993	21.25
1994	21.8
1995	22.48
1996	23.09
1997	23.67
1998	24.28
1999	24.83
2000	25.33
2001	25.83
2002	26.26
2003	26.67
2004	27
2005	27.45
2006	27.85
2007	27.7
2008	27.51
2009	27.27
2010	27.08
2011	26.76
2012	26.47
2013	26.2
2014	25.92
2015	25.64
2016	25.09