Year	Cases per 100,000
1990	35.74
1991	35.29
1992	34.93
1993	34.6
1994	34.33
1995	34.13
1996	33.94
1997	33.74
1998	33.45
1999	33.59
2000	33.41
2001	33.41
2002	32.62
2003	31.85
2004	31.19
2005	30.71
2006	29.96
2007	29.16
2008	28.73
2009	27.83
2010	27.16
2011	26.29
2012	25.75
2013	25.25
2014	24.74
2015	24.28
2016	23.87