Year Number per 100,000 adults 2006-01-01 0.8371910000000000 2007-01-01 1.1071200000000000 2008-01-01 1.6419200000000000 2009-01-01 2.9230700000000000 2010-01-01 3.6214000000000000 2011-01-01 3.7233500000000000 2012-01-01 3.6573000000000000 2013-01-01 3.8008800000000003 2014-01-01 3.7341800000000003