Year	Cases per 100,000
1990	41.03
1991	41.86
1992	42.76
1993	43.68
1994	44.62
1995	45.62
1996	45.3
1997	45.03
1998	44.75
1999	44.49
2000	44.27
2001	42.8
2002	41.41
2003	40.08
2004	38.8
2005	37.6
2006	36.67
2007	35.74
2008	34.87
2009	34.03
2010	33.24
2011	32.64
2012	32.08
2013	31.54
2014	31.01
2015	30.49
2016	30