Year	Cases per 100,000
1990	59.25
1991	59.29
1992	55.66
1993	54.91
1994	61.27
1995	60.67
1996	54.81
1997	45.42
1998	41.59
1999	40.55
2000	39.55
2001	38.99
2002	38.87
2003	39.46
2004	39.82
2005	42.84
2006	41.91
2007	41.7
2008	41.41
2009	41.4
2010	43.39
2011	38.42
2012	38.43
2013	36.13
2014	37.09
2015	37.51
2016	36.36