Year	Cases per 100,000
1990	41.44
1991	43.08
1992	44.85
1993	46.76
1994	48.83
1995	51.06
1996	50.5
1997	49.96
1998	49.46
1999	48.98
2000	48.53
2001	48.43
2002	48.35
2003	48.27
2004	48.21
2005	48.16
2006	47.91
2007	47.67
2008	47.44
2009	47.21
2010	47
2011	46.13
2012	45.28
2013	44.46
2014	43.67
2015	42.9
2016	42.16
