Quarter	Billions of US Dollars
1996-10-01	0.08513
1997-01-01	0.07973
1997-04-01	0.07748
1997-07-01	0.07645
1997-10-01	0.07608
1998-01-01	0.07431
1998-04-01	0.07558
1998-07-01	0.08072
1998-10-01	0.08028
1999-01-01	0.07407
1999-04-01	0.07150
1999-07-01	0.07376
1999-10-01	0.06962
2000-01-01	0.06646
2000-04-01	0.06662
2000-07-01	0.06151
2000-10-01	0.06486
2001-01-01	0.06083
2001-04-01	0.29217
2001-07-01	0.40628
2001-10-01	0.55064
2002-01-01	0.54482
2002-04-01	0.62237
2002-07-01	0.61598
2002-10-01	0.65518
2003-01-01	0.67927
2003-04-01	0.71211
2003-07-01	0.72665
2003-10-01	1.41835
2004-01-01	1.37275
2004-04-01	1.43186
2004-07-01	1.92228
2004-10-01	2.19707
2005-01-01	1.97947
2005-04-01	2.16719
2005-07-01	2.14161
2005-10-01	2.11461
2006-01-01	2.13575
2006-04-01	3.25126
2006-07-01	3.17698
2006-10-01	2.62699
2007-01-01	3.03161
2007-04-01	4.88208
2007-07-01	4.64835
2007-10-01	4.27405
2008-01-01	4.77035
2008-04-01	4.36676
2008-07-01	5.21880
2008-10-01	5.62253
2009-01-01	5.45327
2009-04-01	6.27774
2009-07-01	7.30690
2009-10-01	7.15900
2010-01-01	7.41525
2010-04-01	5.23895
2010-07-01	7.14775
2010-10-01	5.63833
2011-01-01	5.97803
2011-04-01	7.20570
2011-07-01	9.68964
2011-10-01	9.29162
2012-01-01	3.11670
2012-04-01	3.06685
2012-07-01	2.49939
2012-10-01	2.54756
2013-01-01	2.47658
2013-04-01	4.22716
2013-07-01	4.27996
2013-10-01	3.58117
2014-01-01	3.58040
2014-04-01	3.54723
2014-07-01	2.39211
2014-10-01	2.27991
2015-01-01	2.02745
2015-04-01	2.10600