Year	Cases per 100,000
1990	23.17
1991	23.41
1992	23.65
1993	23.9
1994	24.15
1995	24.41
1996	24.74
1997	25.1
1998	25.46
1999	25.84
2000	26.23
2001	26.65
2002	27.09
2003	27.54
2004	27.99
2005	28.46
2006	28.82
2007	29.18
2008	29.56
2009	29.94
2010	30.33
2011	30.28
2012	30.23
2013	30.18
2014	30.13
2015	30.08
2016	30.04