Year Number per 1,000 adults 2008-01-01 36.74910000000000 2009-01-01 88.12640000000000 2010-01-01 106.51000000000000 2011-01-01 140.39400000000000 2012-01-01 167.51600000000000 2013-01-01 157.38600000000000 2014-01-01 174.90300000000000 2015-01-01 183.57299999999998 2016-01-01 184.59900000000002