Year	Cases per 100,000
1990	23.02
1991	23.19
1992	23.37
1993	23.55
1994	23.74
1995	23.94
1996	24.15
1997	24.36
1998	24.58
1999	24.8
2000	25.02
2001	25.36
2002	25.71
2003	26.07
2004	26.44
2005	26.84
2006	26.78
2007	26.73
2008	26.68
2009	26.63
2010	26.6
2011	26.86
2012	27.14
2013	27.41
2014	27.69
2015	27.98
2016	28.27