Quarter	Billions of US Dollars
1996-04-01	0.07493
1997-04-01	0.31184
1997-10-01	0.04306
1998-01-01	0.27251
1998-04-01	0.44220
1998-07-01	0.18315
1998-10-01	0.07161
1999-01-01	0.18773
1999-04-01	0.24374
1999-07-01	0.10147
1999-10-01	0.19174
2000-01-01	1.15451
2000-04-01	1.27188
2000-07-01	0.33218
2000-10-01	0.32878
2001-01-01	1.07041
2001-04-01	0.05279
2001-07-01	0.18331
2001-10-01	0.36699
2002-01-01	0.49976
2002-04-01	0.33427
2002-07-01	0.46659
2002-10-01	0.33181
2003-01-01	0.12358
2003-04-01	0.05090
2003-07-01	0.17643
2003-10-01	0.47136
2004-01-01	0.27014
2004-04-01	0.13878
2004-07-01	0.42736
2004-10-01	0.12538
2005-01-01	0.42853
2005-04-01	0.21858
2005-07-01	0.17268
2005-10-01	0.16818
2006-01-01	0.18389
2006-04-01	0.16045
2006-07-01	0.03679
2006-10-01	0.05957
2007-01-01	1.44489
2007-04-01	0.58276
2007-07-01	3.53388
2007-10-01	0.21140
2008-01-01	3.71297
2008-04-01	0.20558
2008-07-01	0.20586
2008-10-01	0.10406
2009-01-01	0.03688
2009-04-01	0.10907
2009-07-01	0.46135
2009-10-01	0.16173
2010-01-01	0.43522
2010-04-01	0.43513
2010-07-01	0.84075
2010-10-01	0.25413
2011-01-01	0.23113
2011-04-01	0.19118
2011-07-01	0.07235
2011-10-01	0.07316
2012-01-01	0.11369
2012-04-01	0.09548
2012-07-01	0.45745
2012-10-01	0.50053
2013-01-01	0.08724
2013-04-01	0.05405
2013-07-01	0.12815
2013-10-01	0.08025
2014-01-01	0.17072
2014-04-01	0.52543
2014-07-01	0.28825
2014-10-01	0.13433
2015-01-01	0.17885
2015-04-01	1.60990