Year Number per 100,000 adults 2004-01-01 8.775030000000001 2005-01-01 9.087480000000001 2006-01-01 12.111400000000000 2007-01-01 13.377000000000000 2008-01-01 14.211300000000000 2009-01-01 15.015200000000000 2010-01-01 15.983900000000000 2011-01-01 17.395300000000000 2012-01-01 18.009000000000000 2013-01-01 18.308200000000000 2014-01-01 18.443200000000000 2015-01-01 18.585300000000000