Quarter Percent per Annum 2008-10-01 -10.43 2009-01-01 -9.99 2009-04-01 -7.74 2009-07-01 -4.12 2009-10-01 -1.98 2010-01-01 -0.17 2010-04-01 0.55 2010-07-01 -0.47 2010-10-01 -1.59 2011-01-01 -2.85 2011-04-01 -3.71 2011-07-01 -3.07 2011-10-01 -3.06 2012-01-01 -1.95 2012-04-01 -0.52 2012-07-01 -0.12 2012-10-01 1.10 2013-01-01 1.73 2013-04-01 2.52 2013-07-01 3.07 2013-10-01 3.48 2014-01-01 3.50 2014-04-01 2.30 2014-07-01 2.20 2014-10-01 2.38 2015-01-01 3.46 2015-04-01 3.89 2015-07-01 4.10 2015-10-01 4.04 2016-01-01 3.98 2016-04-01 4.28 2016-07-01 4.11 2016-10-01 3.82 2017-01-01 3.27 2017-04-01 3.49 2017-07-01 3.31 2017-10-01 2.98 2018-01-01 2.85 2018-04-01 2.28