Quarter Percent per Annum 2007-01-01 5.84 2007-04-01 4.09 2007-07-01 3.43 2007-10-01 -1.17 2008-01-01 -1.31 2008-04-01 -2.88 2008-07-01 -3.03 2008-10-01 -2.24 2009-01-01 -4.77 2009-04-01 -3.12 2009-07-01 -5.75 2009-10-01 -5.84 2010-01-01 -4.66 2010-04-01 -9.36 2010-07-01 -10.17 2010-10-01 -11.49 2011-01-01 -9.65 2011-04-01 -8.34 2011-07-01 -6.95 2011-10-01 -9.15 2012-01-01 -12.32 2012-04-01 -12.17 2012-07-01 -13.73 2012-10-01 -13.75 2013-01-01 -11.50 2013-04-01 -11.55 2013-07-01 -9.25 2013-10-01 -7.61 2014-01-01 -7.87 2014-04-01 -6.84 2014-07-01 -6.31 2014-10-01 -3.77 2015-01-01 -1.78 2015-04-01 -2.89 2015-07-01 -4.06 2015-10-01 -4.53 2016-01-01 -3.47 2016-04-01 -1.60 2016-07-01 -0.78 2016-10-01 -0.59 2017-01-01 -3.23 2017-04-01 -2.31 2017-07-01 -1.71 2017-10-01 -1.28 2018-01-01 0.19 2018-04-01 0.22