Quarter	Billions of US Dollars
1985-10-01	189.467
1986-01-01	192.975
1986-04-01	205.750
1986-07-01	185.640
1986-10-01	213.401
1987-01-01	214.348
1987-04-01	223.654
1987-07-01	236.910
1987-10-01	254.246
1988-01-01	260.437
1988-04-01	277.097
1988-07-01	288.617
1988-10-01	301.058
1989-01-01	303.983
1989-04-01	311.701
1989-07-01	323.360
1989-10-01	282.189
1990-01-01	288.685
1990-04-01	300.893
1990-07-01	320.075
1990-10-01	313.103
1991-01-01	319.732
1991-04-01	323.388
1991-07-01	338.238
1991-10-01	356.694
1992-01-01	366.220
1992-04-01	387.943
1992-07-01	400.054
1992-10-01	408.152
1993-01-01	488.670
1993-04-01	508.747
1993-07-01	524.870
1993-10-01	583.311
1994-01-01	406.219
1994-04-01	434.764
1994-07-01	465.997
1994-10-01	502.792
1995-01-01	524.414
1995-04-01	552.772
1995-07-01	581.903
1995-10-01	637.963
1996-01-01	656.961
1996-04-01	703.984
1996-07-01	724.699
1996-10-01	775.022
1997-01-01	829.892
1997-04-01	857.736
1997-07-01	891.905
1997-10-01	942.644
1998-01-01	956.631
1998-04-01	985.101
1998-07-01	1042.587
1998-10-01	1087.536
1999-01-01	1105.294
1999-04-01	1139.572
1999-07-01	1175.138
1999-10-01	1216.706
2000-01-01	1242.893
2000-04-01	1237.004
2000-07-01	1285.326
2000-10-01	1351.899
2001-01-01	1267.890
2001-04-01	1322.172
2001-07-01	1349.063
2001-10-01	1389.208
2002-01-01	1539.714
2002-04-01	1608.703
2002-07-01	1676.610
2002-10-01	1741.202
2003-01-01	1841.388
2003-04-01	1977.536
2003-07-01	2072.347
2003-10-01	2117.712
2004-01-01	2249.196
2004-04-01	2281.639
2004-07-01	2338.575
2004-10-01	2409.923
2005-01-01	2476.991
2005-04-01	2498.708
2005-07-01	2627.054
2005-10-01	2691.864
2006-01-01	2898.127
2006-04-01	3048.782
2006-07-01	3170.175
2006-10-01	3289.026
2007-01-01	3540.167
2007-04-01	3802.731
2007-07-01	4039.284
2007-10-01	4262.987
2008-01-01	4685.321
2008-04-01	4994.442
2008-07-01	5188.090
2008-10-01	5339.746
2009-01-01	6039.967
2009-04-01	6612.232
2009-07-01	6987.380
2009-10-01	7303.588
2010-01-01	7788.143
2010-04-01	8297.755
2010-07-01	8757.283
2010-10-01	9223.592
2011-01-01	9744.427
2011-04-01	10314.813
2011-07-01	10802.318
2011-10-01	11421.360
2012-01-01	12045.586
2012-04-01	12461.840
2012-07-01	13179.567
2012-10-01	13870.828
2013-01-01	14809.778
2013-04-01	15643.419
2013-07-01	16375.568
2013-10-01	17053.616
2014-01-01	17408.330
2014-04-01	18187.176
2014-07-01	18841.994
2014-10-01	19221.197
2015-01-01	20034.583
2015-04-01	20737.328
2015-07-01	20940.212
2015-10-01	21390.726
2016-01-01	22346.324
2016-04-01	22345.176
2016-07-01	22795.902
2016-10-01	22529.701
2017-01-01	23380.401
2017-04-01	24298.212
2017-07-01	25446.964
2017-10-01	26485.083
2018-01-01	28681.874