Quarter	Billions of US Dollars
2000-01-01	9.198
2000-04-01	9.623
2000-07-01	9.228
2000-10-01	10.764
2001-01-01	11.161
2001-04-01	12.462
2001-07-01	15.087
2001-10-01	16.147
2002-01-01	17.535
2002-04-01	22.105
2002-07-01	22.953
2002-10-01	23.086
2003-01-01	26.553
2003-04-01	28.599
2003-07-01	29.267
2003-10-01	30.994
2004-01-01	32.090
2004-04-01	34.628
2004-07-01	35.342
2004-10-01	39.067
2005-01-01	38.573
2005-04-01	36.398
2005-07-01	37.033
2005-10-01	37.031
2006-01-01	39.309
2006-04-01	42.357
2006-07-01	43.253
2006-10-01	46.631
2007-01-01	46.861
2007-04-01	48.312
2007-07-01	52.425
2007-10-01	58.307
2008-01-01	65.022
2008-04-01	72.718
2008-07-01	64.160
2008-10-01	58.869
2009-01-01	55.427
2009-04-01	68.887
2009-07-01	75.233
2009-10-01	71.780
2010-01-01	71.802
2010-04-01	65.997
2010-07-01	83.952
2010-10-01	78.919
2011-01-01	87.695
2011-04-01	90.523
2011-07-01	85.552
2011-10-01	80.608
2012-01-01	92.631
2012-04-01	85.507
2012-07-01	92.490
2012-10-01	94.711
2013-01-01	91.764
2013-04-01	91.437
2013-07-01	94.069
2013-10-01	92.541
2014-01-01	92.310
2014-04-01	90.349
2014-07-01	83.583
2014-10-01	79.631
2015-01-01	71.712
2015-04-01	75.060
2015-07-01	75.335
2015-10-01	73.979
2016-01-01	78.177
2016-04-01	75.727
2016-07-01	74.847
2016-10-01	68.459
2017-01-01	76.102
2017-04-01	83.795
2017-07-01	79.038
2017-10-01	82.152
2018-01-01	88.776