Year	Cases per 100,000
1983	61.42375
1984	60.5075
1985	57.03125
1986	58.405
1987	59.51875
1988	62.9225
1989	64.14625
1990	61.75
1991	60.67
1992	60.14
1993	59.15
1994	58.9
1995	57.45
1996	56.17
1997	54.32
1998	52.67
1999	51.4
2000	50.29
2001	49.87
2002	49.31
2003	48.23
2004	47.7
2005	45.74
2006	43.83
2007	42.47
2008	42.27
2009	41.48
2010	40.39
2011	40.27
2012	40.43
2013	40.6
2014	41.05
2015	41.79
2016	42.23
