Quarter	US Dollars, monthly level
1999-01-01	1041840835781.4899
1999-04-01	1069860938448.0701
1999-07-01	1089080119190.5300
1999-10-01	1202452952321.2700
2000-01-01	1201229275858.1600
2000-04-01	1227702882768.8600
2000-07-01	1219191280721.4102
2000-10-01	1290509395753.0900
2001-01-01	1243551038055.4600
2001-04-01	1191002853247.7000
2001-07-01	1131072352377.5100
2001-10-01	1160616261749.1000
2002-01-01	1103928678569.8700
2002-04-01	1212599204326.1000
2002-07-01	1238219662463.8300
2002-10-01	1325526436144.0400
2003-01-01	1344262806178.6400
2003-04-01	1396396629104.1400
2003-07-01	1371544762135.1500
2003-10-01	1542012201212.6602
2004-01-01	1576703542189.8398
2004-04-01	1652944617198.8800
2004-07-01	1666308781438.2000
2004-10-01	1856493945261.9302
2005-01-01	1795876224707.3300
2005-04-01	1890124217215.8100
2005-07-01	1869026729298.3499
2005-10-01	1980160895273.0800
2006-01-01	1997567090677.7400
2006-04-01	2142384360082.0500
2006-07-01	2148653662350.4300
2006-10-01	2255906300190.9897
2007-01-01	2254254336708.2100
2007-04-01	2375902325142.4000
2007-07-01	2415967159179.9300
2007-10-01	2669356185287.8100
2008-01-01	2715810244361.8700
2008-04-01	2943193089925.4800
2008-07-01	2880172418317.0400
2008-10-01	2364278125226.2900
2009-01-01	1878632547971.4202
2009-04-01	1913858013365.7300
2009-07-01	2099984428786.4597
2009-10-01	2302540531615.8700
2010-01-01	2250466363857.4897
2010-04-01	2353389290401.5303
2010-07-01	2425785637034.3604
2010-10-01	2641601319827.0300
2011-01-01	2723394767054.9900
2011-04-01	2922389595696.9800
2011-07-01	2901768773907.7200
2011-10-01	2848360807597.4800
2012-01-01	2815385717446.0800
2012-04-01	2799807435607.4497
2012-07-01	2722132737289.8700
2012-10-01	2816310125475.4100
2013-01-01	2730398890244.0503
2013-04-01	2774384518317.2300
2013-07-01	2786620130085.2600
2013-10-01	2888478712759.5900
2014-01-01	2835169737415.1300
2014-04-01	2900931560859.2200
2014-07-01	2858184729508.9900
2014-10-01	2782758178701.4600
2015-01-01	2497139540547.4900
2015-04-01	2543991116762.4400
2015-07-01	2507465091678.8700
2015-10-01	2507815362145.8800
2016-01-01	2361585164211.3696
2016-04-01	2490732575847.0503
2016-07-01	2476272566134.8900
2016-10-01	2528311016604.5200
2017-01-01	2563538998262.4100
2017-04-01	2658565537122.9800
2017-07-01	2737680010245.0303
2017-10-01	2894364187426.3200
2018-01-01	2959239601564.1396
2018-04-01	2985163818492.0400