Year	Cases per 100,000
1983	43.255
1984	47.01
1985	47.425
1986	50.34
1987	54.845
1988	54.02
1989	55.565
1990	56.61
1991	56.67
1992	56.75
1993	56.83
1994	56.92
1995	57.02
1996	56.5
1997	56
1998	55.53
1999	55.08
2000	54.65
2001	54.17
2002	53.7
2003	53.26
2004	52.85
2005	52.45
2006	51.51
2007	50.59
2008	49.7
2009	48.83
2010	48
2011	48.22
2012	48.46
2013	48.7
2014	48.94
2015	49.19
2016	49.45