Year Number per 100,000 adults 2004-01-01 6.0964500000000000 2005-01-01 5.7990400000000000 2006-01-01 5.5675099999999995 2007-01-01 4.8755300000000000 2008-01-01 4.3902199999999990 2009-01-01 3.6678699999999997 2010-01-01 3.1924099999999997 2011-01-01 2.0985800000000000 2012-01-01 1.7072200000000002 2013-01-01 1.5627400000000000 2014-01-01 1.2036500000000000 2015-01-01 0.8921420000000000 2016-01-01 0.8561190000000001