Year Number per 100,000 adults 2004-01-01 30.6767 2005-01-01 30.6349 2006-01-01 31.2442 2007-01-01 31.6806 2008-01-01 31.5805 2009-01-01 31.2339 2010-01-01 30.7529 2011-01-01 30.3779 2012-01-01 30.2392 2013-01-01 29.5745 2014-01-01 29.2250 2015-01-01 28.7593