Quarter	US Dollars, monthly level
1999-01-01	1012416504890.8900
1999-04-01	1028662387030.7802
1999-07-01	1035199985039.2001
1999-10-01	1150293194288.1501
2000-01-01	1131012807108.7800
2000-04-01	1148146616823.6600
2000-07-01	1122108702605.1200
2000-10-01	1188357519964.1500
2001-01-01	1172447669379.5600
2001-04-01	1119991775001.5400
2001-07-01	1054292603668.5500
2001-10-01	1096912253376.0701
2002-01-01	1056657876285.7600
2002-04-01	1153443235568.7900
2002-07-01	1161729176460.7800
2002-10-01	1235405705949.9700
2003-01-01	1252736048645.2600
2003-04-01	1305273030224.4800
2003-07-01	1286289163591.1301
2003-10-01	1456725822536.6099
2004-01-01	1505606355509.7800
2004-04-01	1553880615495.0800
2004-07-01	1530932889133.8400
2004-10-01	1708042460739.8599
2005-01-01	1664789673874.4600
2005-04-01	1741435274352.4200
2005-07-01	1684980848146.6800
2005-10-01	1788583931723.1301
2006-01-01	1829668936705.6600
2006-04-01	1961358480858.7800
2006-07-01	1918664088024.1301
2006-10-01	2072207497854.7798
2007-01-01	2084353108289.7598
2007-04-01	2190621795280.0898
2007-07-01	2198122710198.4900
2007-10-01	2435624499669.8500
2008-01-01	2511390381189.8300
2008-04-01	2710941153803.7900
2008-07-01	2578305988186.0100
2008-10-01	2129579844395.4400
2009-01-01	1751094057920.8500
2009-04-01	1838303812431.4900
2009-07-01	1976160094709.5800
2009-10-01	2188384252108.6900
2010-01-01	2134702014741.2300
2010-04-01	2209981121729.6600
2010-07-01	2248081980883.6400
2010-10-01	2495240540495.6797
2011-01-01	2552182151460.3896
2011-04-01	2706546592650.1704
2011-07-01	2672898162143.0700
2011-10-01	2652842758798.8600
2012-01-01	2626089598798.0796
2012-04-01	2615534859527.1900
2012-07-01	2512943761366.1597
2012-10-01	2632474266859.6600
2013-01-01	2578815220410.0903
2013-04-01	2635377470234.3500
2013-07-01	2587974011673.0500
2013-10-01	2735217083290.2500
2014-01-01	2677520262098.3200
2014-04-01	2741008233720.8600
2014-07-01	2656937388978.6797
2014-10-01	2641983554106.9100
2015-01-01	2371511233836.8500
2015-04-01	2421515745019.1600
2015-07-01	2336275000081.0800
2015-10-01	2370561263275.3300
2016-01-01	2251497176983.2400
2016-04-01	2402339673042.4600
2016-07-01	2324761987613.6500
2016-10-01	2424104169203.5703
2017-01-01	2444214715353.2200
2017-04-01	2534125095743.4300
2017-07-01	2578290815976.2700
2017-10-01	2737300531823.5900
2018-01-01	2799086638745.8700
2018-04-01	2833829555988.3300