Year	Cases per 100,000
1990	27.56
1991	26.82
1992	26.16
1993	25.62
1994	25.13
1995	24.78
1996	24.5
1997	24.18
1998	23.38
1999	26.38
2000	26.16
2001	26.62
2002	26.55
2003	24.95
2004	24.02
2005	23.36
2006	23.34
2007	23.33
2008	22.73
2009	23.82
2010	24.19
2011	23.7
2012	23.38
2013	23.43
2014	23.5
2015	23.58
2016	23.5