Year	Cases per 100,000
1990	58.46
1991	58.23
1992	57.45
1993	57.42
1994	57.52
1995	57.57
1996	56.69
1997	52.61
1998	49.99
1999	47.9
2000	45.51
2001	43.3
2002	41.01
2003	39.84
2004	38.71
2005	37.91
2006	37.4
2007	36.85
2008	36.18
2009	35.09
2010	34.45
2011	33.8
2012	32.82
2013	31.9
2014	30.96
2015	30.47
2016	29.96