Quarter Percent per Annum 2007-01-01 49.63 2007-04-01 39.67 2007-07-01 36.51 2007-10-01 23.14 2008-01-01 16.68 2008-04-01 11.27 2008-07-01 -3.81 2008-10-01 -17.76 2009-01-01 -36.98 2009-04-01 -42.25 2009-07-01 -39.09 2009-10-01 -29.30 2010-01-01 -20.67 2010-04-01 -11.51 2010-07-01 -7.72 2010-10-01 -2.45 2011-01-01 10.78 2011-04-01 12.32 2011-07-01 13.02 2011-10-01 5.76 2012-01-01 2.59 2012-04-01 2.01 2012-07-01 1.30 2012-10-01 6.10 2013-01-01 4.81 2013-04-01 7.86 2013-07-01 6.45 2013-10-01 8.21 2014-01-01 10.55 2014-04-01 7.73 2014-07-01 10.68 2014-10-01 -4.47 2015-01-01 -6.54 2015-04-01 -4.62 2015-07-01 -7.92 2015-10-01 6.57 2016-01-01 7.11 2016-04-01 9.46 2016-07-01 9.60 2016-10-01 7.76 2017-01-01 9.29 2017-04-01 9.13 2017-07-01 8.79 2017-10-01 7.93 2018-01-01 11.42 2018-04-01 8.69