Year	Cases per 100,000
1990	18.14
1991	18.3
1992	18.46
1993	18.62
1994	18.78
1995	18.95
1996	19.21
1997	19.47
1998	19.73
1999	20
2000	20.28
2001	20.41
2002	20.55
2003	20.68
2004	20.82
2005	20.96
2006	21.09
2007	21.21
2008	21.34
2009	21.47
2010	21.6
2011	21.72
2012	21.84
2013	21.97
2014	22.09
2015	22.22
2016	22.35