Quarter	Billions of US Dollars
1953-07-01	2.459
1953-10-01	2.490
1954-01-01	2.520
1954-04-01	2.555
1954-07-01	2.590
1954-10-01	2.626
1955-01-01	2.659
1955-04-01	2.663
1955-07-01	2.698
1955-10-01	2.730
1956-01-01	2.763
1956-04-01	2.806
1956-07-01	2.853
1956-10-01	2.881
1957-01-01	2.917
1957-04-01	2.951
1957-07-01	2.998
1957-10-01	3.046
1958-01-01	3.104
1958-04-01	3.162
1958-07-01	3.231
1958-10-01	3.307
1959-01-01	3.434
1959-04-01	3.549
1959-07-01	3.657
1959-10-01	3.772
1960-01-01	3.903
1960-04-01	4.030
1960-07-01	4.164
1960-10-01	4.282
1961-01-01	4.401
1961-04-01	4.523
1961-07-01	4.687
1961-10-01	4.833
1962-01-01	4.979
1962-04-01	5.130
1962-07-01	5.267
1962-10-01	5.445
1963-01-01	5.618
1963-04-01	5.803
1963-07-01	5.978
1963-10-01	6.158
1964-01-01	6.407
1964-04-01	6.637
1964-07-01	6.872
1964-10-01	7.126
1965-01-01	7.396
1965-04-01	7.663
1965-07-01	7.987
1965-10-01	8.282
1966-01-01	8.597
1966-04-01	8.921
1966-07-01	9.277
1966-10-01	9.618
1967-01-01	9.906
1967-04-01	10.186
1967-07-01	10.492
1967-10-01	10.035
1968-01-01	10.386
1968-04-01	10.668
1968-07-01	11.001
1968-10-01	11.331
1969-01-01	11.812
1969-04-01	12.273
1969-07-01	12.797
1969-10-01	13.315
1970-01-01	13.726
1970-04-01	14.148
1970-07-01	14.573
1970-10-01	15.019
1971-01-01	15.402
1971-04-01	15.729
1971-07-01	16.578
1971-10-01	17.473
1972-01-01	18.487
1972-04-01	19.315
1972-07-01	19.305
1972-10-01	21.189
1973-01-01	24.621
1973-04-01	28.337
1973-07-01	29.362
1973-10-01	28.023
1974-01-01	30.071
1974-04-01	31.610
1974-07-01	32.107
1974-10-01	36.022
1975-01-01	38.738
1975-04-01	39.736
1975-07-01	36.133
1975-10-01	37.469
1976-01-01	39.190
1976-04-01	39.854
1976-07-01	43.022
1976-10-01	44.759
1977-01-01	45.418
1977-04-01	45.197
1977-07-01	45.420
1977-10-01	49.546
1978-01-01	52.744
1978-04-01	53.271
1978-07-01	57.452
1978-10-01	62.045
1979-01-01	62.286
1979-04-01	62.492
1979-07-01	66.851
1979-10-01	65.035
1980-01-01	58.984
1980-04-01	66.518
1980-07-01	66.127
1980-10-01	62.490
1981-01-01	58.175
1981-04-01	52.627
1981-07-01	54.803
1981-10-01	55.490
1982-01-01	50.219
1982-04-01	49.682
1982-07-01	48.527
1982-10-01	51.839
1983-01-01	51.299
1983-04-01	49.830
1983-07-01	48.721
1983-10-01	48.561
1984-01-01	52.040
1984-04-01	50.805
1984-07-01	48.351
1984-10-01	48.479
1985-01-01	50.937
1985-04-01	53.419
1985-07-01	61.655
1985-10-01	72.002
1986-01-01	77.733
1986-04-01	86.344
1986-07-01	95.839
1986-10-01	107.111
1987-01-01	117.587
1987-04-01	118.587
1987-07-01	118.570
1987-10-01	144.560
1988-01-01	138.271
1988-04-01	130.182
1988-07-01	125.284
1988-10-01	135.348
1989-01-01	125.665
1989-04-01	124.144
1989-07-01	129.808
1989-10-01	148.224
1990-01-01	150.942
1990-04-01	155.565
1990-07-01	166.328
1990-10-01	176.863
1991-01-01	156.324
1991-04-01	149.334
1991-07-01	161.504
1991-10-01	178.874
1992-01-01	165.622
1992-04-01	180.311
1992-07-01	192.146
1992-10-01	167.660
1993-01-01	167.854
1993-04-01	160.862
1993-07-01	160.166
1993-10-01	157.253
1994-01-01	164.509
1994-04-01	172.671
1994-07-01	176.108
1994-10-01	175.648
1995-01-01	196.246
1995-04-01	201.135
1995-07-01	197.235
1995-10-01	199.968
1996-01-01	198.703
1996-04-01	194.925
1996-07-01	197.888
1996-10-01	197.220
1997-01-01	186.300
1997-04-01	183.162
1997-07-01	184.195
1997-10-01	184.589
1998-01-01	183.590
1998-04-01	193.096
1998-07-01	213.587
1998-10-01	215.165
1999-01-01	202.643
1999-04-01	198.467
1999-07-01	207.009
1999-10-01	195.758
2000-01-01	193.662
2000-04-01	197.722
2000-07-01	185.778
2000-10-01	199.818
2001-01-01	196.402
2001-04-01	192.501
2001-07-01	210.343
2001-10-01	209.117
2002-01-01	209.509
2002-04-01	242.379
2002-07-01	243.767
2002-10-01	260.924
2003-01-01	278.078
2003-04-01	296.230
2003-07-01	305.521
2003-10-01	335.674
2004-01-01	333.047
2004-04-01	339.729
2004-07-01	351.102
2004-10-01	394.309
2005-01-01	388.330
2005-04-01	374.890
2005-07-01	383.661
2005-10-01	389.919
2006-01-01	413.097
2006-04-01	450.204
2006-07-01	461.626
2006-10-01	496.427
2007-01-01	517.422
2007-04-01	541.707
2007-07-01	581.858
2007-10-01	626.507
2008-01-01	686.169
2008-04-01	700.971
2008-07-01	644.913
2008-10-01	637.144
2009-01-01	609.649
2009-04-01	648.181
2009-07-01	669.839
2009-10-01	665.166
2010-01-01	624.238
2010-04-01	571.437
2010-07-01	634.228
2010-10-01	620.475
2011-01-01	656.790
2011-04-01	665.476
2011-07-01	623.451
2011-10-01	597.251
2012-01-01	618.226
2012-04-01	585.936
2012-07-01	596.261
2012-10-01	605.561
2013-01-01	588.556
2013-04-01	601.099
2013-07-01	614.993
2013-10-01	635.523
2014-01-01	638.581
2014-04-01	633.773
2014-07-01	586.852
2014-10-01	567.313
2015-01-01	503.069
2015-04-01	518.750
2015-07-01	519.582
2015-10-01	504.665
2016-01-01	533.778
2016-04-01	525.714
2016-07-01	531.139
2016-10-01	502.368
2017-01-01	512.902
2017-04-01	549.594
2017-07-01	571.054
2017-10-01	580.508
2018-01-01	598.930