Quarter	Billions of US Dollars
1952-01-01	84.061
1952-04-01	88.204
1952-07-01	91.189
1952-10-01	95.595
1953-01-01	97.869
1953-04-01	102.319
1953-07-01	104.806
1953-10-01	108.158
1954-01-01	107.988
1954-04-01	111.763
1954-07-01	115.171
1954-10-01	120.453
1955-01-01	123.626
1955-04-01	130.685
1955-07-01	135.989
1955-10-01	141.563
1956-01-01	143.247
1956-04-01	148.421
1956-07-01	151.718
1956-10-01	156.401
1957-01-01	157.484
1957-04-01	162.474
1957-07-01	165.542
1957-10-01	168.575
1958-01-01	167.641
1958-04-01	171.149
1958-07-01	174.659
1958-10-01	180.371
1959-01-01	182.567
1959-04-01	189.505
1959-07-01	195.611
1959-10-01	202.315
1960-01-01	203.148
1960-04-01	209.907
1960-07-01	214.461
1960-10-01	219.861
1961-01-01	220.584
1961-04-01	226.654
1961-07-01	230.869
1961-10-01	237.901
1962-01-01	239.141
1962-04-01	246.172
1962-07-01	252.328
1962-10-01	259.752
1963-01-01	262.568
1963-04-01	271.958
1963-07-01	279.337
1963-10-01	288.211
1964-01-01	292.001
1964-04-01	301.505
1964-07-01	308.222
1964-10-01	317.130
1965-01-01	320.497
1965-04-01	329.929
1965-07-01	336.667
1965-10-01	345.863
1966-01-01	348.849
1966-04-01	358.365
1966-07-01	362.093
1966-10-01	368.393
1967-01-01	368.006
1967-04-01	375.100
1967-07-01	380.913
1967-10-01	402.322
1968-01-01	393.697
1968-04-01	406.261
1968-07-01	413.578
1968-10-01	426.692
1969-01-01	425.240
1969-04-01	436.394
1969-07-01	441.993
1969-10-01	453.272
1970-01-01	445.469
1970-04-01	451.801
1970-07-01	458.431
1970-10-01	467.163
1971-01-01	469.639
1971-04-01	483.064
1971-07-01	495.415
1971-10-01	511.310
1972-01-01	518.277
1972-04-01	537.901
1972-07-01	553.025
1972-10-01	571.267
1973-01-01	583.239
1973-04-01	601.750
1973-07-01	620.571
1973-10-01	636.677
1974-01-01	640.514
1974-04-01	660.692
1974-07-01	678.739
1974-10-01	691.472
1975-01-01	690.577
1975-04-01	704.331
1975-07-01	724.070
1975-10-01	747.477
1976-01-01	756.712
1976-04-01	783.379
1976-07-01	808.300
1976-10-01	836.261
1977-01-01	852.727
1977-04-01	891.184
1977-07-01	929.088
1977-10-01	966.509
1978-01-01	988.956
1978-04-01	1038.797
1978-07-01	1085.944
1978-10-01	1128.024
1979-01-01	1155.013
1979-04-01	1202.081
1979-07-01	1252.102
1979-10-01	1296.909
1980-01-01	1325.355
1980-04-01	1343.148
1980-07-01	1378.505
1980-10-01	1420.202
1981-01-01	1428.866
1981-04-01	1465.475
1981-07-01	1495.810
1981-10-01	1526.567
1982-01-01	1530.208
1982-04-01	1554.070
1982-07-01	1563.669
1982-10-01	1597.908
1983-01-01	1590.371
1983-04-01	1640.797
1983-07-01	1697.873
1983-10-01	1759.608
1984-01-01	1791.459
1984-04-01	1855.999
1984-07-01	1911.347
1984-10-01	1977.678
1985-01-01	2051.338
1985-04-01	2125.961
1985-07-01	2216.808
1985-10-01	2329.784
1986-01-01	2353.403
1986-04-01	2418.960
1986-07-01	2505.500
1986-10-01	2592.292
1987-01-01	2594.993
1987-04-01	2687.323
1987-07-01	2764.686
1987-10-01	2802.014
1988-01-01	2846.192
1988-04-01	2930.968
1988-07-01	3010.894
1988-10-01	3084.161
1989-01-01	3124.217
1989-04-01	3207.880
1989-07-01	3287.453
1989-10-01	3365.603
1990-01-01	3430.883
1990-04-01	3500.700
1990-07-01	3561.130
1990-10-01	3624.019
1991-01-01	3647.565
1991-04-01	3710.694
1991-07-01	3750.629
1991-10-01	3832.141
1992-01-01	3850.925
1992-04-01	3893.461
1992-07-01	3959.680
1992-10-01	4031.214
1993-01-01	4036.702
1993-04-01	4102.443
1993-07-01	4186.769
1993-10-01	4278.290
1994-01-01	4308.905
1994-04-01	4392.602
1994-07-01	4479.987
1994-10-01	4598.647
1995-01-01	4625.725
1995-04-01	4714.681
1995-07-01	4825.275
1995-10-01	4916.961
1996-01-01	4985.309
1996-04-01	5083.181
1996-07-01	5179.065
1996-10-01	5276.345
1997-01-01	5315.697
1997-04-01	5409.501
1997-07-01	5527.870
1997-10-01	5621.663
1998-01-01	5676.600
1998-04-01	5814.563
1998-07-01	5929.893
1998-10-01	6074.787
1999-01-01	6159.437
1999-04-01	6313.003
1999-07-01	6471.994
1999-10-01	6641.133
2000-01-01	6768.179
2000-04-01	6915.853
2000-07-01	7095.986
2000-10-01	7236.764
2001-01-01	7283.805
2001-04-01	7479.460
2001-07-01	7733.445
2001-10-01	7859.307
2002-01-01	7986.533
2002-04-01	8170.837
2002-07-01	8381.294
2002-10-01	8624.555
2003-01-01	8808.133
2003-04-01	9197.163
2003-07-01	9455.116
2003-10-01	9707.291
2004-01-01	9906.539
2004-04-01	10217.469
2004-07-01	10488.081
2004-10-01	10855.295
2005-01-01	11064.237
2005-04-01	11391.987
2005-07-01	11738.257
2005-10-01	12028.672
2006-01-01	12386.754
2006-04-01	12723.023
2006-07-01	13048.871
2006-10-01	13313.145
2007-01-01	13493.498
2007-04-01	13792.457
2007-07-01	14044.264
2007-10-01	14253.766
2008-01-01	14375.542
2008-04-01	14309.675
2008-07-01	14454.221
2008-10-01	14140.468
2009-01-01	14029.048
2009-04-01	13998.585
2009-07-01	13992.635
2009-10-01	13977.520
2010-01-01	13847.571
2010-04-01	13792.057
2010-07-01	13740.246
2010-10-01	13728.435
2011-01-01	13685.792
2011-04-01	13631.962
2011-07-01	13574.450
2011-10-01	13579.459
2012-01-01	13532.559
2012-04-01	13497.128
2012-07-01	13536.958
2012-10-01	13586.642
2013-01-01	13545.766
2013-04-01	13554.870
2013-07-01	13636.610
2013-10-01	13720.233
2014-01-01	13676.853
2014-04-01	13803.044
2014-07-01	13906.752
2014-10-01	13975.343
2015-01-01	13945.092
2015-04-01	14078.619
2015-07-01	14139.168
2015-10-01	14159.896
2016-01-01	14157.876
2016-04-01	14301.604
2016-07-01	14489.844
2016-10-01	14598.599
2017-01-01	14650.378
2017-04-01	14812.182
2017-07-01	14951.645
2017-10-01	15132.792
2018-01-01	15170.184