Quarter	US Dollars, sum over component sub-periods
1999-01-01	641090315152.0520
1999-04-01	648641843698.4840
1999-07-01	654906880344.4710
1999-10-01	709366141944.3530
2000-01-01	707897299177.3360
2000-04-01	717389427177.4020
2000-07-01	699180915441.8910
2000-10-01	734278425632.0000
2001-01-01	722604356149.6061
2001-04-01	689736540258.2109
2001-07-01	645199647960.6431
2001-10-01	664331303390.4160
2002-01-01	637280859460.1539
2002-04-01	696157059032.2881
2002-07-01	698729883363.8450
2002-10-01	734103394742.8290
2003-01-01	743128037329.6520
2003-04-01	768356051744.8060
2003-07-01	758536363267.4779
2003-10-01	851388921363.5520
2004-01-01	877238107996.6410
2004-04-01	905503217623.6279
2004-07-01	890922581711.3740
2004-10-01	979390648238.3950
2005-01-01	959644630641.0210
2005-04-01	1003212270555.0801
2005-07-01	975079587400.8141
2005-10-01	1026710778975.2001
2006-01-01	1057026602413.2399
2006-04-01	1129817347580.7000
2006-07-01	1096756786338.7300
2006-10-01	1175689293568.5298
2007-01-01	1180340744622.4702
2007-04-01	1240947916109.5500
2007-07-01	1245973152252.8499
2007-10-01	1359252662193.5300
2008-01-01	1400287225714.5698
2008-04-01	1495549302607.4600
2008-07-01	1426475370375.5300
2008-10-01	1192649662658.9302
2009-01-01	960871303576.6620
2009-04-01	999102815400.9310
2009-07-01	1080233082496.4401
2009-10-01	1199704286003.3901
2010-01-01	1176374560227.4100
2010-04-01	1214939514038.1600
2010-07-01	1239165323384.0800
2010-10-01	1360732865502.2800
2011-01-01	1392824311611.7700
2011-04-01	1459237653476.0300
2011-07-01	1458049606940.5900
2011-10-01	1455076092307.1900
2012-01-01	1446361294815.6800
2012-04-01	1435632039056.7700
2012-07-01	1386216350050.6602
2012-10-01	1431339114097.6600
2013-01-01	1407477799841.8500
2013-04-01	1437630766866.3200
2013-07-01	1414543587462.6700
2013-10-01	1484027352135.6600
2014-01-01	1457112276093.5000
2014-04-01	1498482016558.1100
2014-07-01	1465370250654.1301
2014-10-01	1455094073478.1500
2015-01-01	1308648454138.0300
2015-04-01	1344301324162.9200
2015-07-01	1303346498797.0600
2015-10-01	1306710609842.3400
2016-01-01	1242322790362.6602
2016-04-01	1324561849106.7600
2016-07-01	1286073396978.9102
2016-10-01	1329933216503.3801
2017-01-01	1329504833470.6902
2017-04-01	1372910106732.1200
2017-07-01	1397599842779.0100
2017-10-01	1487861655840.5600
2018-01-01	1506774977145.8900