Quarter	Billions of US Dollars
1990-10-01	401.103
1991-01-01	359.036
1991-04-01	344.283
1991-07-01	380.986
1991-10-01	426.676
1992-01-01	403.844
1992-04-01	442.159
1992-07-01	489.756
1992-10-01	436.561
1993-01-01	440.184
1993-04-01	422.378
1993-07-01	439.743
1993-10-01	417.949
1994-01-01	440.600
1994-04-01	469.240
1994-07-01	489.563
1994-10-01	496.653
1995-01-01	559.260
1995-04-01	561.623
1995-07-01	545.647
1995-10-01	542.747
1996-01-01	535.719
1996-04-01	525.732
1996-07-01	529.875
1996-10-01	528.054
1997-01-01	501.145
1997-04-01	492.941
1997-07-01	494.658
1997-10-01	481.674
1998-01-01	482.990
1998-04-01	502.823
1998-07-01	555.469
1998-10-01	564.724
1999-01-01	538.602
1999-04-01	526.324
1999-07-01	558.462
1999-10-01	539.729
2000-01-01	522.285
2000-04-01	533.891
2000-07-01	501.790
2000-10-01	550.690
2001-01-01	518.987
2001-04-01	505.924
2001-07-01	547.209
2001-10-01	539.575
2002-01-01	534.275
2002-04-01	602.862
2002-07-01	607.474
2002-10-01	644.116
2003-01-01	671.176
2003-04-01	710.210
2003-07-01	727.837
2003-10-01	845.081
2004-01-01	811.634
2004-04-01	803.582
2004-07-01	820.619
2004-10-01	916.186
2005-01-01	874.396
2005-04-01	851.559
2005-07-01	857.439
2005-10-01	834.446
2006-01-01	860.949
2006-04-01	903.117
2006-07-01	918.643
2006-10-01	946.826
2007-01-01	981.116
2007-04-01	999.970
2007-07-01	1065.888
2007-10-01	1114.132
2008-01-01	1242.120
2008-04-01	1272.858
2008-07-01	1156.420
2008-10-01	1119.122
2009-01-01	1084.952
2009-04-01	1160.392
2009-07-01	1200.858
2009-10-01	1194.362
2010-01-01	1160.070
2010-04-01	1100.044
2010-07-01	1239.909
2010-10-01	1241.096
2011-01-01	1346.194
2011-04-01	1413.635
2011-07-01	1337.232
2011-10-01	1320.944
2012-01-01	1382.992
2012-04-01	1332.191
2012-07-01	1369.756
2012-10-01	1391.172
2013-01-01	1358.693
2013-04-01	1403.559
2013-07-01	1453.932
2013-10-01	1490.390
2014-01-01	1496.508
2014-04-01	1501.971
2014-07-01	1393.453
2014-10-01	1440.304
2015-01-01	1317.108
2015-04-01	1379.768
2015-07-01	1377.559
2015-10-01	1329.093
2016-01-01	1403.968
2016-04-01	1374.172
2016-07-01	1437.263
2016-10-01	1344.404
2017-01-01	1372.713
2017-04-01	1469.957
2017-07-01	1528.660
2017-10-01	1537.134
2018-01-01	1614.065