Quarter Millions of US Dollars 2009-01-01 33305.236000000004 2009-04-01 35139.164000000000 2009-07-01 38182.248000000000 2009-10-01 39824.222000000000 2010-01-01 43112.009000000005 2010-04-01 43569.145999999990 2010-07-01 48125.791000000000 2010-10-01 50002.957000000000 2011-01-01 52111.355000000000 2011-04-01 54663.551000000000 2011-07-01 55851.785000000000 2011-10-01 58573.572000000000 2012-01-01 64004.332000000000 2012-04-01 66268.871000000000 2012-07-01 69983.395000000000 2012-10-01 77813.981000000000 2013-01-01 76248.901000000000 2013-04-01 73990.851000000000 2013-07-01 77379.595000000000 2013-10-01 76773.362000000010 2014-01-01 75246.147000000000 2014-04-01 78824.879000000000 2014-07-01 77227.455999999990 2014-10-01 78914.880000000000 2015-01-01 80056.574000000010 2015-04-01 78995.287000000000 2015-07-01 77046.649000000000 2015-10-01 77263.977000000000 2016-01-01 77558.358000000000 2016-04-01 75233.140000000000 2016-07-01 74609.928000000000 2016-10-01 73520.895000000000 2017-01-01 73334.874000000010 2017-04-01 76659.887999999990 2017-07-01 75645.240000000000 2017-10-01 82753.363000000000 2018-01-01 79093.964000000000