Quarter Percent per Annum 2006-10-01 11.69 2007-01-01 10.45 2007-04-01 8.98 2007-07-01 6.70 2007-10-01 1.68 2008-01-01 -1.47 2008-04-01 -4.66 2008-07-01 -7.45 2008-10-01 -7.50 2009-01-01 -7.85 2009-04-01 -6.96 2009-07-01 -5.94 2009-10-01 -4.51 2010-01-01 -4.03 2010-04-01 -2.51 2010-07-01 -3.58 2010-10-01 -3.87 2011-01-01 -6.81 2011-04-01 -9.40 2011-07-01 -10.80 2011-10-01 -15.08 2012-01-01 -15.83 2012-04-01 -17.58 2012-07-01 -18.36 2012-10-01 -15.36 2013-01-01 -15.04 2013-04-01 -12.12 2013-07-01 -7.54 2013-10-01 -6.41 2014-01-01 -1.61 2014-04-01 0.61 2014-07-01 0.61 2014-10-01 2.27 2015-01-01 2.59 2015-04-01 4.28 2015-07-01 4.92 2015-10-01 4.59 2016-01-01 6.98 2016-04-01 4.85 2016-07-01 4.21 2016-10-01 3.40 2017-01-01 2.50 2017-04-01 3.52 2017-07-01 4.92 2017-10-01 5.66 2018-01-01 5.24 2018-04-01 4.91