Quarter	US Dollars, monthly level
1999-01-01	700675632.3919901
1999-04-01	795159769.4802840
1999-07-01	852565499.1875780
1999-10-01	979124144.0472490
2000-01-01	845732169.5166060
2000-04-01	1004195173.2760199
2000-07-01	1018330543.6391199
2000-10-01	1139905703.3132200
2001-01-01	963477881.0757339
2001-04-01	1093097722.7014900
2001-07-01	1105331664.5417400
2001-10-01	1217271170.6838200
2002-01-01	1013492402.6600400
2002-04-01	1227326863.9610500
2002-07-01	1255623068.6597500
2002-10-01	1379829443.5838000
2003-01-01	1215965136.8933399
2003-04-01	1409119068.2067502
2003-07-01	1489277428.0389500
2003-10-01	1586259825.1435401
2004-01-01	1536607618.9735801
2004-04-01	1857412396.7207901
2004-07-01	1922383200.7159002
2004-10-01	2106780774.0963497
2005-01-01	1887244912.9883400
2005-04-01	2131312672.0024397
2005-07-01	2179942023.3956700
2005-10-01	2474805076.6373600
2006-01-01	2287128263.2658796
2006-04-01	2776563746.3713202
2006-07-01	3062913795.5008700
2006-10-01	3449185579.2359100
2007-01-01	3339565321.5449700
2007-04-01	3802951467.9081798
2007-07-01	4023700061.2051900
2007-10-01	4167875622.2952400
2008-01-01	4084449689.5602000
2008-04-01	4410096591.9421100
2008-07-01	4331245238.0243800
2008-10-01	3339098030.3076997
2009-01-01	2338681628.1865400
2009-04-01	2244066221.3511500
2009-07-01	2505445872.0436000
2009-10-01	2725163871.4862800
2010-01-01	2421151498.4673700
2010-04-01	2598255704.4774800
2010-07-01	3113497763.9722400
2010-10-01	3547167487.5725100
2011-01-01	3392898224.0241000
2011-04-01	3991548454.3497100
2011-07-01	4509686890.2646890
2011-10-01	4557985072.7192900
2012-01-01	4008293705.1565104
2012-04-01	4209613882.7702500
2012-07-01	4326817157.1879900
2012-10-01	4685067740.7505800
2013-01-01	4253923886.6019506
2013-04-01	4246122648.0703998
2013-07-01	4614816183.4995800
2013-10-01	4751151694.5910100
2014-01-01	4319024864.9895800
2014-04-01	4384463024.0133900
2014-07-01	4484684476.0907700
2014-10-01	4437129170.4300800
2015-01-01	3521821380.0290900
2015-04-01	3549145434.7594100
2015-07-01	3768886100.4888000
2015-10-01	3639681668.6184000
2016-01-01	3210282857.9618497
2016-04-01	3598187525.2387400
2016-07-01	3620200304.0731600
2016-10-01	3816365179.1706800
2017-01-01	3647505353.7201700
2017-04-01	4001950847.9150900
2017-07-01	4638342260.1824090
2017-10-01	4596659921.1428995
2018-01-01	4456622656.4281000
2018-04-01	4734056011.3352190