Year	Cases per 100,000
1990	65.21
1991	67.04
1992	66.85
1993	67.29
1994	68.4
1995	69.22
1996	68.59
1997	66.54
1998	63.83
1999	61.07
2000	57.08
2001	52.81
2002	48.93
2003	45.86
2004	43.02
2005	40.6
2006	38.9
2007	37.52
2008	36.65
2009	36.03
2010	35.7
2011	35.28
2012	34.86
2013	34.81
2014	34.68
2015	34.6
2016	34.61