Month Millions of Dollars 2007-01-01 2.06560900000000000 2007-02-01 3.40786799999999920 2007-03-01 2.13187500000000000 2007-04-01 1.26891900000000000 2007-05-01 1.44432900000000000 2007-06-01 5.01109400000000000 2007-07-01 2.78430800000000020 2007-08-01 3.89272900000000000 2007-09-01 0.90073100000000000 2007-10-01 4.41373400000000000 2007-11-01 2.50690400000000000 2007-12-01 15.47796300000000000 2008-01-01 3.04698400000000000 2008-02-01 1.56381600000000030 2008-03-01 2.24934900000000000 2008-04-01 2.48331999999999950 2008-05-01 3.11241200000000000 2008-06-01 1.91393300000000030 2008-07-01 3.67352000000000000 2008-08-01 13.59901300000000000 2008-09-01 4.30975300000000000 2008-10-01 5.83576299999999800 2008-11-01 4.54614600000000000 2008-12-01 6.85149200000000000 2009-01-01 3.83321900000000000 2009-02-01 2.95991600000000070 2009-03-01 3.46257000000000100 2009-04-01 3.99536900000000000 2009-05-01 4.59496700000000000 2009-06-01 4.33020000000000000 2009-07-01 2.83118300000000020 2009-08-01 3.89798700000000000 2009-09-01 1.63472500000000000 2009-10-01 1.41855199999999980 2009-11-01 0.61360900000000000 2009-12-01 1.21557100000000000 2010-01-01 0.88274900000000000 2010-02-01 1.41930000000000020 2010-03-01 1.24288600000000000 2010-04-01 1.27618100000000000 2010-05-01 2.12899100000000000 2010-06-01 0.91580200000000010 2010-07-01 0.92522699999999980 2010-08-01 1.10652900000000000 2010-09-01 0.56126300000000000 2010-10-01 1.62360600000000000 2010-11-01 1.25431100000000000 2010-12-01 1.21795800000000000 2011-01-01 0.39028099999999993 2011-02-01 0.61675100000000000 2011-03-01 1.17786499999999970 2011-04-01 1.62226400000000000 2011-05-01 3.55212700000000100 2011-06-01 1.90570600000000000 2011-07-01 1.24248300000000000 2011-08-01 1.60346600000000050 2011-09-01 0.94968200000000000 2011-10-01 1.42146500000000000 2011-11-01 1.75295000000000000 2011-12-01 1.43796900000000000 2012-01-01 1.58222400000000000 2012-02-01 1.72161800000000000 2012-03-01 0.56730300000000000 2012-04-01 0.85238300000000000 2012-05-01 1.56033700000000000 2012-06-01 1.05484600000000000 2012-07-01 0.91510700000000000 2012-08-01 0.86812200000000000 2012-09-01 0.67749000000000000 2012-10-01 1.16357100000000000 2012-11-01 0.58773400000000000 2012-12-01 0.84666700000000000 2013-01-01 0.74663200000000000 2013-02-01 0.45736300000000000 2013-03-01 2.26199000000000000 2013-04-01 1.13349100000000000 2013-05-01 6.46777300000000000 2013-06-01 1.91401900000000000 2013-07-01 1.84738300000000000 2013-08-01 1.57249100000000000 2013-09-01 1.41965200000000000 2013-10-01 1.79888900000000000 2013-11-01 1.13981800000000000 2013-12-01 0.92445400000000000 2014-01-01 0.77734300000000000 2014-02-01 1.73440800000000000 2014-03-01 1.31302100000000000 2014-04-01 1.42497400000000000 2014-05-01 3.07534000000000000 2014-06-01 2.20211300000000000 2014-07-01 2.17917400000000000 2014-08-01 1.37107300000000000 2014-09-01 1.07896400000000000 2014-10-01 0.76036800000000000 2014-11-01 0.92786200000000000 2014-12-01 1.33477300000000000 2015-01-01 0.53913500000000000 2015-02-01 0.29025400000000000 2015-03-01 1.53050500000000000 2015-04-01 2.89077000000000000 2015-05-01 2.26677100000000000 2015-06-01 0.76611800000000000 2015-07-01 0.73793700000000000 2015-08-01 0.26541800000000000 2015-09-01 0.26300000000000000 2015-10-01 0.56452500000000000 2015-11-01 0.28996100000000000 2015-12-01 0.72956300000000000 2016-01-01 0.11893000000000000 2016-02-01 0.39038000000000000 2016-03-01 5.64570400000000000 2016-04-01 1.35996200000000000 2016-05-01 4.28840500000000000 2016-06-01 1.18642300000000000 2016-07-01 1.00780800000000000 2016-08-01 0.95987200000000000 2016-09-01 0.34030500000000000 2016-10-01 0.45919400000000000 2016-11-01 0.61545000000000000 2016-12-01 0.33889400000000000 2017-01-01 0.23533800000000000 2017-02-01 0.28179200000000000 2017-03-01 0.52224700000000000 2017-04-01 1.30826600000000000 2017-05-01 1.24778700000000000 2017-06-01 1.48812300000000000 2017-07-01 0.42333300000000000 2017-08-01 0.80944500000000000 2017-09-01 0.44909700000000000 2017-10-01 0.85175800000000000 2017-11-01 0.60120000000000000 2017-12-01 0.93033200000000000 2018-01-01 0.58517400000000000 2018-02-01 0.53615400000000000 2018-03-01 4.59938000000000000 2018-04-01 9.44988700000000000 2018-05-01 1.26469800000000000 2018-06-01 5.08989600000000000 2018-07-01 1.68506000000000000 2018-08-01 29.08818100000000000 2018-09-01 6.76224100000000000 2018-10-01 0.99403200000000000