Year	Cases per 100,000
1990	44.59
1991	43.63
1992	44.49
1993	42.76
1994	41.92
1995	38.5
1996	36.38
1997	35.02
1998	33.92
1999	33.52
2000	32.68
2001	32
2002	31.9
2003	32.36
2004	31.98
2005	31.68
2006	32.26
2007	32.8
2008	34.41
2009	35.14
2010	36.2
2011	35.03
2012	34.47
2013	34.23
2014	34.18
2015	34.32
2016	34.5