Year	Cases per 100,000
1990	14.68
1991	14.77
1992	14.85
1993	14.94
1994	15.02
1995	15.12
1996	15.48
1997	15.86
1998	16.25
1999	16.64
2000	17.06
2001	17.52
2002	18
2003	18.49
2004	19
2005	19.52
2006	19.83
2007	20.13
2008	20.44
2009	20.76
2010	21.09
2011	21.28
2012	21.47
2013	21.67
2014	21.87
2015	22.07
2016	22.28