Year	Cases per 100,000
1983	43.695
1984	45.72
1985	48.655
1986	49.37
1987	51.005
1988	52.35
1989	52.815
1990	54.11
1991	54.33
1992	54.55
1993	54.77
1994	55
1995	55.23
1996	55.65
1997	56.06
1998	56.49
1999	56.91
2000	57.35
2001	57.36
2002	57.39
2003	57.41
2004	57.44
2005	57.47
2006	56.51
2007	55.56
2008	54.63
2009	53.72
2010	52.84
2011	52.81
2012	52.79
2013	52.77
2014	52.75
2015	52.74
2016	52.74