Quarter	US Dollars, sum over component sub-periods
1995-01-01	351641293.15683603
1995-04-01	72038230.11009270
1995-07-01	227968406.58970600
1995-10-01	70520611.10510090
1996-01-01	35171724.27945400
1996-04-01	29248974.43519620
1996-07-01	36056451.83454720
1996-10-01	138146016.91258400
1997-01-01	2141755268.75442980
1997-04-01	1292680786.31078980
1997-07-01	196094305.28407902
1997-10-01	2315850363.58282000
1998-01-01	2724486216.39947000
1998-04-01	5706408171.72596000
1998-07-01	3588886600.32831000
1998-10-01	7804784082.39365000
1999-01-01	-4244189467.27784970
1999-04-01	2021563147.99904000
1999-07-01	449878503.68409300
1999-10-01	394396113.72316300
2000-01-01	-1192615369.13851000
2000-04-01	2522414267.44643000
2000-07-01	-4040368690.95614000
2000-10-01	273019105.03437500
2001-01-01	358910685.83419700
2001-04-01	-952450825.06871400
2001-07-01	-1256032849.89524980
2001-10-01	-3272764601.51726000
2002-01-01	-1769914630.18989000
2002-04-01	-623498665.18361500
2002-07-01	188868149.76299497
2002-10-01	-1696792011.43082000
2003-01-01	-929671424.35711610
2003-04-01	3080537864.23990000
2003-07-01	142958441.81324700
2003-10-01	233220844.00703698
2004-01-01	-1216395786.75968000
2004-04-01	2101949399.08834030
2004-07-01	1862137477.53993990
2004-10-01	1573913796.36853000
2005-01-01	-1525374122.07377000
2005-04-01	-1330246078.36327000
2005-07-01	-2203638116.85603000
2005-10-01	-3600190877.18450000
2006-01-01	522057579.16462094
2006-04-01	2204576369.59051000
2006-07-01	4640618099.19155000
2006-10-01	3798767288.52497000
2007-01-01	527068353.68642205
2007-04-01	-806151061.90376200
2007-07-01	5272647622.66364000
2007-10-01	-4577615644.32776000
2008-01-01	2491518982.79716970
2008-04-01	-4434682923.36475100
2008-07-01	-3432377354.83750000
2008-10-01	-6636465470.22977100
2009-01-01	-9342905974.81859000
2009-04-01	2447195710.94571970
2009-07-01	15226860681.62800000
2009-10-01	1091268241.84204000
2010-01-01	2400838168.28601000
2010-04-01	-2177956615.13327030
2010-07-01	4565850793.02918000
2010-10-01	3039040397.71813000
2011-01-01	4313596425.32337950
2011-04-01	-1537169382.22375000
2011-07-01	-7789806378.68703900
2011-10-01	-2818609452.87415030
2012-01-01	-205891508.66184000
2012-04-01	1205411901.72343000
2012-07-01	588133512.39094090
2012-10-01	3597511529.41621000
2013-01-01	-651830380.00400000
2013-04-01	-340868572.99403900
2013-07-01	2528673511.87335000
2013-10-01	-3548423402.53286030
2014-01-01	2191417369.66701000
2014-04-01	1782635068.64055000
2014-07-01	-2896731582.68576000
2014-10-01	24972858.30324190
2015-01-01	2602686748.04463000
2015-04-01	-1342741953.14959000
2015-07-01	4023232983.61136000
2015-10-01	2685347188.97932000
2016-01-01	1209040966.98147000
2016-04-01	-2361193617.35356000
2016-07-01	-108239597.45709600
2016-10-01	3577330549.78344000
2017-01-01	-2490206940.62283040
2017-04-01	636770854.10365310
2017-07-01	2011902396.34584000
2017-10-01	-3510179847.45642000
2018-01-01	4309673804.91182000
2018-04-01	7293762848.79327000