Quarter	Billions of US Dollars
1957-01-01	3.293
1957-04-01	3.413
1957-07-01	3.351
1957-10-01	3.459
1958-01-01	3.668
1958-04-01	3.681
1958-07-01	3.672
1958-10-01	3.788
1959-01-01	4.028
1959-04-01	4.151
1959-07-01	4.122
1959-10-01	4.247
1960-01-01	4.487
1960-04-01	4.570
1960-07-01	4.468
1960-10-01	4.438
1961-01-01	4.567
1961-04-01	4.535
1961-07-01	4.503
1961-10-01	4.621
1962-01-01	4.914
1962-04-01	5.030
1962-07-01	4.967
1962-10-01	5.084
1963-01-01	5.245
1963-04-01	5.394
1963-07-01	5.395
1963-10-01	5.603
1964-01-01	5.800
1964-04-01	5.954
1964-07-01	5.941
1964-10-01	6.124
1965-01-01	6.321
1965-04-01	6.539
1965-07-01	6.535
1965-10-01	6.816
1966-01-01	7.056
1966-04-01	4.624
1966-07-01	4.581
1966-10-01	4.778
1967-01-01	4.969
1967-04-01	5.029
1967-07-01	5.013
1967-10-01	5.244
1968-01-01	5.434
1968-04-01	5.554
1968-07-01	5.545
1968-10-01	5.683
1969-01-01	6.041
1969-04-01	6.334
1969-07-01	6.214
1969-10-01	6.509
1970-01-01	6.826
1970-04-01	7.459
1970-07-01	7.532
1970-10-01	7.953
1971-01-01	8.518
1971-04-01	8.499
1971-07-01	8.557
1971-10-01	9.455
1972-01-01	9.797
1972-04-01	9.534
1972-07-01	9.315
1972-10-01	9.679
1973-01-01	11.253
1973-04-01	11.997
1973-07-01	11.354
1973-10-01	11.985
1974-01-01	13.100
1974-04-01	13.584
1974-07-01	13.190
1974-10-01	13.732
1975-01-01	15.570
1975-04-01	14.704
1975-07-01	14.140
1975-10-01	15.214
1976-01-01	16.589
1976-04-01	16.968
1976-07-01	17.994
1976-10-01	19.692
1977-01-01	20.355
1977-04-01	20.435
1977-07-01	21.351
1977-10-01	24.187
1978-01-01	24.331
1978-04-01	25.382
1978-07-01	27.013
1978-10-01	29.060
1979-01-01	29.757
1979-04-01	31.532
1979-07-01	32.791
1979-10-01	35.353
1980-01-01	35.845
1980-04-01	38.145
1980-07-01	38.912
1980-10-01	41.520
1981-01-01	42.250
1981-04-01	41.781
1981-07-01	40.558
1981-10-01	43.876
1982-01-01	44.297
1982-04-01	44.071
1982-07-01	44.278
1982-10-01	49.901
1983-01-01	49.139
1983-04-01	49.685
1983-07-01	50.519
1983-10-01	53.286
1984-01-01	54.225
1984-04-01	53.655
1984-07-01	51.046
1984-10-01	53.342
1985-01-01	55.902
1985-04-01	55.276
1985-07-01	58.896
1985-10-01	61.075
1986-01-01	64.786
1986-04-01	63.922
1986-07-01	63.339
1986-10-01	64.678
1987-01-01	70.593
1987-04-01	69.819
1987-07-01	70.757
1987-10-01	75.716
1988-01-01	80.013
1988-04-01	73.340
1988-07-01	73.450
1988-10-01	78.679
1989-01-01	78.284
1989-04-01	77.217
1989-07-01	77.295
1989-10-01	81.208
1990-01-01	84.411
1990-04-01	85.151
1990-07-01	83.181
1990-10-01	86.252
1991-01-01	84.358
1991-04-01	78.735
1991-07-01	64.294
1991-10-01	66.549
1992-01-01	62.108
1992-04-01	65.982
1992-07-01	67.692
1992-10-01	69.953
1993-01-01	67.910
1993-04-01	68.166
1993-07-01	67.752
1993-10-01	70.919
1994-01-01	73.742
1994-04-01	73.814
1994-07-01	78.918
1994-10-01	82.534
1995-01-01	91.038
1995-04-01	91.214
1995-07-01	88.442
1995-10-01	88.518
1996-01-01	98.339
1996-04-01	93.993
1996-07-01	94.299
1996-10-01	96.255
1997-01-01	103.138
1997-04-01	102.271
1997-07-01	102.299
1997-10-01	98.533
1998-01-01	107.545
1998-04-01	98.925
1998-07-01	102.264
1998-10-01	104.552
1999-01-01	113.827
1999-04-01	110.655
1999-07-01	114.632
1999-10-01	124.172
2000-01-01	131.021
2000-04-01	133.524
2000-07-01	132.272
2000-10-01	138.071
2001-01-01	142.811
2001-04-01	143.236
2001-07-01	143.476
2001-10-01	148.885
2002-01-01	154.531
2002-04-01	166.341
2002-07-01	170.979
2002-10-01	178.472
2003-01-01	188.698
2003-04-01	194.461
2003-07-01	197.689
2003-10-01	209.083
2004-01-01	233.073
2004-04-01	226.806
2004-07-01	237.810
2004-10-01	274.485
2005-01-01	291.497
2005-04-01	306.270
2005-07-01	330.601
2005-10-01	336.382
2006-01-01	378.260
2006-04-01	370.349
2006-07-01	402.588
2006-10-01	435.589
2007-01-01	491.597
2007-04-01	515.036
2007-07-01	564.470
2007-10-01	593.686
2008-01-01	643.975
2008-04-01	607.609
2008-07-01	596.233
2008-10-01	590.667
2009-01-01	592.627
2009-04-01	626.946
2009-07-01	649.301
2009-10-01	682.946
2010-01-01	777.387
2010-04-01	769.033
2010-07-01	823.357
2010-10-01	904.985
2011-01-01	949.715
2011-04-01	964.241
2011-07-01	901.626
2011-10-01	885.315
2012-01-01	979.171
2012-04-01	921.471
2012-07-01	972.632
2012-10-01	983.983
2013-01-01	1042.131
2013-04-01	978.755
2013-07-01	954.115
2013-10-01	998.151
2014-01-01	1074.686
2014-04-01	1089.883
2014-07-01	1066.064
2014-10-01	1077.143
2015-01-01	1125.078
2015-04-01	1122.707
2015-07-01	1098.799
2015-10-01	1136.973
2016-01-01	1174.725
2016-04-01	1152.839
2016-07-01	1208.785
2016-10-01	1161.755
2017-01-01	1294.725
2017-04-01	1268.649
2017-07-01	1308.917
2017-10-01	1351.578
2018-01-01	1410.526