Quarter	Billions of US Dollars
2000-01-01	36.687
2000-04-01	37.074
2000-07-01	38.803
2000-10-01	47.644
2001-01-01	48.345
2001-04-01	41.826
2001-07-01	46.051
2001-10-01	46.069
2002-01-01	47.778
2002-04-01	56.713
2002-07-01	61.941
2002-10-01	74.819
2003-01-01	80.953
2003-04-01	89.555
2003-07-01	89.930
2003-10-01	100.640
2004-01-01	99.232
2004-04-01	113.711
2004-07-01	120.387
2004-10-01	125.492
2005-01-01	122.620
2005-04-01	117.826
2005-07-01	124.147
2005-10-01	121.235
2006-01-01	128.155
2006-04-01	146.983
2006-07-01	156.721
2006-10-01	183.993
2007-01-01	181.620
2007-04-01	183.732
2007-07-01	211.222
2007-10-01	213.095
2008-01-01	196.907
2008-04-01	194.495
2008-07-01	185.416
2008-10-01	173.894
2009-01-01	168.524
2009-04-01	166.385
2009-07-01	188.363
2009-10-01	175.253
2010-01-01	168.078
2010-04-01	160.734
2010-07-01	179.455
2010-10-01	184.813
2011-01-01	197.695
2011-04-01	199.504
2011-07-01	173.912
2011-10-01	128.022
2012-01-01	150.285
2012-04-01	139.340
2012-07-01	149.166
2012-10-01	154.866
2013-01-01	155.646
2013-04-01	153.420
2013-07-01	151.900
2013-10-01	150.449
2014-01-01	151.332
2014-04-01	138.730
2014-07-01	128.792
2014-10-01	115.101
2015-01-01	113.008
2015-04-01	116.471
2015-07-01	113.709
2015-10-01	112.292
2016-01-01	122.271
2016-04-01	129.608
2016-07-01	132.986
2016-10-01	127.496
2017-01-01	136.602
2017-04-01	136.986
2017-07-01	143.071
2017-10-01	144.597
2018-01-01	153.621