Quarter	Billions of US Dollars
1974-10-01	121.132
1975-01-01	124.398
1975-04-01	130.215
1975-07-01	124.003
1975-10-01	133.737
1976-01-01	113.954
1976-04-01	116.946
1976-07-01	119.932
1976-10-01	124.550
1977-01-01	126.938
1977-04-01	129.844
1977-07-01	132.915
1977-10-01	138.784
1978-01-01	142.107
1978-04-01	143.959
1978-07-01	155.564
1978-10-01	164.321
1979-01-01	166.031
1979-04-01	171.704
1979-07-01	185.591
1979-10-01	199.537
1980-01-01	183.109
1980-04-01	205.724
1980-07-01	203.079
1980-10-01	203.809
1981-01-01	185.949
1981-04-01	167.999
1981-07-01	174.195
1981-10-01	181.583
1982-01-01	165.795
1982-04-01	161.180
1982-07-01	161.539
1982-10-01	178.314
1983-01-01	172.532
1983-04-01	169.185
1983-07-01	163.908
1983-10-01	169.656
1984-01-01	179.847
1984-04-01	176.021
1984-07-01	167.206
1984-10-01	172.003
1985-01-01	171.667
1985-04-01	175.145
1985-07-01	190.322
1985-10-01	220.549
1986-01-01	229.619
1986-04-01	246.255
1986-07-01	269.702
1986-10-01	301.389
1987-01-01	317.850
1987-04-01	317.583
1987-07-01	314.264
1987-10-01	384.311
1988-01-01	367.431
1988-04-01	352.912
1988-07-01	347.046
1988-10-01	402.992
1989-01-01	389.023
1989-04-01	404.457
1989-07-01	425.767
1989-10-01	498.749
1990-01-01	511.542
1990-04-01	541.429
1990-07-01	571.440
1990-10-01	650.426
1991-01-01	572.014
1991-04-01	569.450
1991-07-01	628.433
1991-10-01	730.203
1992-01-01	684.962
1992-04-01	760.429
1992-07-01	722.671
1992-10-01	635.185
1993-01-01	587.336
1993-04-01	618.155
1993-07-01	596.716
1993-10-01	569.352
1994-01-01	591.518
1994-04-01	605.943
1994-07-01	611.627
1994-10-01	606.861
1995-01-01	578.739
1995-04-01	611.857
1995-07-01	613.288
1995-10-01	642.022
1996-01-01	639.805
1996-04-01	663.142
1996-07-01	660.160
1996-10-01	676.985
1997-01-01	614.671
1997-04-01	622.813
1997-07-01	610.379
1997-10-01	625.635
1998-01-01	603.268
1998-04-01	626.823
1998-07-01	667.168
1998-10-01	691.436
1999-01-01	645.149
1999-04-01	640.908
1999-07-01	666.930
1999-10-01	652.548
2000-01-01	637.170
2000-04-01	655.855
2000-07-01	617.165
2000-10-01	677.438
2001-01-01	653.017
2001-04-01	634.851
2001-07-01	688.372
2001-10-01	684.043
2002-01-01	679.213
2002-04-01	794.186
2002-07-01	789.845
2002-10-01	865.940
2003-01-01	910.705
2003-04-01	972.860
2003-07-01	1011.398
2003-10-01	1130.164
2004-01-01	1098.728
2004-04-01	1122.540
2004-07-01	1155.858
2004-10-01	1311.904
2005-01-01	1269.299
2005-04-01	1217.045
2005-07-01	1220.794
2005-10-01	1221.511
2006-01-01	1288.405
2006-04-01	1390.414
2006-07-01	1409.881
2006-10-01	1518.828
2007-01-01	1568.085
2007-04-01	1633.199
2007-07-01	1752.958
2007-10-01	1888.044
2008-01-01	2050.449
2008-04-01	2070.698
2008-07-01	1898.836
2008-10-01	1866.301
2009-01-01	1780.880
2009-04-01	1906.415
2009-07-01	1966.496
2009-10-01	1942.583
2010-01-01	1826.699
2010-04-01	1763.645
2010-07-01	1979.327
2010-10-01	1955.769
2011-01-01	2129.471
2011-04-01	2193.263
2011-07-01	2062.553
2011-10-01	1961.227
2012-01-01	2007.880
2012-04-01	1890.779
2012-07-01	1918.188
2012-10-01	1950.841
2013-01-01	1876.465
2013-04-01	1896.620
2013-07-01	1939.918
2013-10-01	1958.517
2014-01-01	1978.759
2014-04-01	1952.377
2014-07-01	1791.974
2014-10-01	1708.365
2015-01-01	1518.875
2015-04-01	1591.488
2015-07-01	1585.733
2015-10-01	1541.736
2016-01-01	1605.844
2016-04-01	1573.187
2016-07-01	1574.155
2016-10-01	1480.021
2017-01-01	1507.003
2017-04-01	1591.896
2017-07-01	1608.244
2017-10-01	1632.520
2018-01-01	1684.132