Year Percent 2009-01-01 -4.6776300000000010 2010-01-01 0.3927970000000000 2011-01-01 2.7264700000000000 2012-01-01 -1.5036399999999999 2013-01-01 1.1292600000000000 2014-01-01 1.1292600000000000 2015-01-01 1.1292600000000000 2016-01-01 2.0163800000000000