Quarter	US Dollars, monthly level
1999-01-01	788274240.0971150
1999-04-01	1005023760.1238201
1999-07-01	939852160.1157900
1999-10-01	1020820320.1257600
2000-01-01	1042918240.1284900
2000-04-01	1172052960.1444001
2000-07-01	1237138240.1524200
2000-10-01	1451902400.1788700
2001-01-01	1280643520.1577800
2001-04-01	1474690880.1816800
2001-07-01	1397866080.1722200
2001-10-01	1691095120.2083400
2002-01-01	1472766475.2425000
2002-04-01	1923998134.4500098
2002-07-01	1891311411.7013000
2002-10-01	2238241549.5944400
2003-01-01	2027831896.0166600
2003-04-01	2336395499.8427300
2003-07-01	2393773723.0101800
2003-10-01	2910305203.5132100
2004-01-01	2638954133.3525600
2004-04-01	2984932007.8303500
2004-07-01	3147625719.7943300
2004-10-01	3614075769.9862900
2005-01-01	3208163042.0119900
2005-04-01	3920037760.6394800
2005-07-01	3982771516.4974904
2005-10-01	4399578314.0006695
2006-01-01	4130126122.2107797
2006-04-01	4859491505.1789490
2006-07-01	5147580116.5716095
2006-10-01	5275500043.8220810
2007-01-01	5208956997.4557200
2007-04-01	6194083052.0752000
2007-07-01	6349409960.8705900
2007-10-01	6692813068.3531400
2008-01-01	7806967449.3725300
2008-04-01	8870051682.3849200
2008-07-01	8559187170.3401400
2008-10-01	6058248069.5678100
2009-01-01	3991655240.4273900
2009-04-01	4270703720.5146995
2009-07-01	4943805265.9964600
2009-10-01	5134512563.2419810
2010-01-01	4824707050.8509200
2010-04-01	5403320452.0122500
2010-07-01	6143069227.9571400
2010-10-01	7013778803.0168900
2011-01-01	7195023521.5293700
2011-04-01	8294340025.3294010
2011-07-01	8314781819.2787800
2011-10-01	8006343395.6819810
2012-01-01	7712814518.8573400
2012-04-01	7219816277.0565500
2012-07-01	8244540595.1954100
2012-10-01	8810582127.9795800
2013-01-01	8271023753.2823990
2013-04-01	8091053644.7303500
2013-07-01	9110435630.0949500
2013-10-01	9341327480.2930600
2014-01-01	7989724207.5187610
2014-04-01	8920919604.5044400
2014-07-01	8984097034.6172900
2014-10-01	8494031270.5262000
2015-01-01	6490979823.7538700
2015-04-01	7457495158.1978100
2015-07-01	7140806435.6386900
2015-10-01	7071458690.4880705
2016-01-01	6206124341.2830800
2016-04-01	7138418165.7810710
2016-07-01	6896449639.8296600
2016-10-01	7085613615.7434900
2017-01-01	7131513694.4960590
2017-04-01	7814133790.1415900
2017-07-01	8404587184.2641700
2017-10-01	8913866991.3222790
2018-01-01	8955685619.3938300
2018-04-01	9124387256.4394420