Quarter	Billions of US Dollars
2000-01-01	92.431
2000-04-01	92.301
2000-07-01	85.507
2000-10-01	86.615
2001-01-01	80.459
2001-04-01	78.402
2001-07-01	86.660
2001-10-01	78.845
2002-01-01	78.840
2002-04-01	92.169
2002-07-01	95.246
2002-10-01	97.712
2003-01-01	106.322
2003-04-01	110.924
2003-07-01	111.676
2003-10-01	112.484
2004-01-01	115.738
2004-04-01	117.349
2004-07-01	122.072
2004-10-01	121.764
2005-01-01	117.761
2005-04-01	110.579
2005-07-01	101.931
2005-10-01	93.824
2006-01-01	90.232
2006-04-01	96.408
2006-07-01	96.587
2006-10-01	93.747
2007-01-01	92.341
2007-04-01	90.718
2007-07-01	94.731
2007-10-01	93.854
2008-01-01	103.166
2008-04-01	100.623
2008-07-01	83.447
2008-10-01	112.098
2009-01-01	111.404
2009-04-01	125.684
2009-07-01	135.143
2009-10-01	133.956
2010-01-01	133.250
2010-04-01	128.831
2010-07-01	144.328
2010-10-01	138.261
2011-01-01	155.747
2011-04-01	163.569
2011-07-01	162.803
2011-10-01	148.089
2012-01-01	148.478
2012-04-01	145.174
2012-07-01	152.478
2012-10-01	150.447
2013-01-01	144.124
2013-04-01	152.104
2013-07-01	159.627
2013-10-01	157.140
2014-01-01	158.992
2014-04-01	158.759
2014-07-01	152.238
2014-10-01	143.022
2015-01-01	125.411
2015-04-01	126.951
2015-07-01	125.315
2015-10-01	118.120
2016-01-01	122.074
2016-04-01	120.844
2016-07-01	119.457
2016-10-01	111.024
2017-01-01	110.698
2017-04-01	119.601
2017-07-01	124.416
2017-10-01	124.855
2018-01-01	128.139