Quarter	Billions of US Dollars
1999-01-01	111.586
1999-04-01	116.879
1999-07-01	117.463
1999-10-01	119.114
2000-01-01	126.628
2000-04-01	128.776
2000-07-01	126.390
2000-10-01	136.260
2001-01-01	141.285
2001-04-01	146.045
2001-07-01	147.544
2001-10-01	156.278
2002-01-01	160.011
2002-04-01	170.855
2002-07-01	176.743
2002-10-01	193.851
2003-01-01	191.738
2003-04-01	200.979
2003-07-01	200.508
2003-10-01	215.171
2004-01-01	217.301
2004-04-01	225.887
2004-07-01	238.983
2004-10-01	273.656
2005-01-01	267.282
2005-04-01	261.534
2005-07-01	271.179
2005-10-01	275.548
2006-01-01	289.422
2006-04-01	305.679
2006-07-01	322.526
2006-10-01	359.393
2007-01-01	373.133
2007-04-01	397.654
2007-07-01	435.760
2007-10-01	493.321
2008-01-01	554.856
2008-04-01	599.308
2008-07-01	563.619
2008-10-01	499.665
2009-01-01	450.580
2009-04-01	503.622
2009-07-01	562.481
2009-10-01	573.466
2010-01-01	583.928
2010-04-01	520.423
2010-07-01	617.660
2010-10-01	613.554
2011-01-01	659.666
2011-04-01	693.301
2011-07-01	613.502
2011-10-01	595.846
2012-01-01	668.455
2012-04-01	632.397
2012-07-01	678.019
2012-10-01	708.481
2013-01-01	682.861
2013-04-01	682.905
2013-07-01	726.929
2013-10-01	753.965
2014-01-01	720.552
2014-04-01	734.956
2014-07-01	688.525
2014-10-01	664.707
2015-01-01	630.447
2015-04-01	643.758
2015-07-01	649.118
2015-10-01	632.067
2016-01-01	673.546
2016-04-01	647.870
2016-07-01	668.432
2016-10-01	633.606
2017-01-01	670.427
2017-04-01	719.784
2017-07-01	730.309
2017-10-01	763.361
2018-01-01	792.190