Year	Cases per 100,000
1990	77
1991	77.56
1992	76.41
1993	75.5
1994	74.5
1995	75.47
1996	73.27
1997	70.85
1998	69.5
1999	68.31
2000	67.06
2001	66.83
2002	65.47
2003	64.95
2004	63.18
2005	62.42
2006	61.77
2007	61.14
2008	60.24
2009	59.58
2010	59.02
2011	58.63
2012	57.9
2013	57.29
2014	56.92
2015	56.74
2016	56.62