Quarter	US Dollars, monthly level
1990-01-01	915000000.000000
1990-04-01	846000000.000000
1990-07-01	951000000.000000
1990-10-01	1364000000.000000
1991-01-01	1301000000.000000
1991-04-01	1742000000.000000
1991-07-01	2276000000.000000
1991-10-01	2956000000.000000
1992-01-01	2887000000.000000
1992-04-01	3582000000.000000
1992-07-01	4355000000.000000
1992-10-01	4048000000.000000
1993-01-01	3260000000.000000
1993-04-01	3870000000.000000
1993-07-01	4660000000.000000
1993-10-01	4994000000.000000
1994-01-01	4915000000.000000
1994-04-01	5329000000.000000
1994-07-01	5645000000.000000
1994-10-01	5702000000.000000
1995-01-01	5239000000.000000
1995-04-01	4780000000.000000
1995-07-01	4918000000.000000
1995-10-01	5186000000.000000
1996-01-01	4986000000.000000
1996-04-01	5725000000.000000
1996-07-01	6580000000.000000
1996-10-01	6471000000.000000
1997-01-01	6493000000.000000
1997-04-01	7520000000.000000
1997-07-01	8195000000.000000
1997-10-01	8242000000.000001
1998-01-01	7535000000.000000
1998-04-01	8188000000.000001
1998-07-01	8428000000.000001
1998-10-01	7225000000.000000
1999-01-01	5840000000.000000
1999-04-01	6016000000.000000
1999-07-01	6843000000.000000
1999-10-01	6808000000.000000
2000-01-01	5876000000.000000
2000-04-01	6298000000.000000
2000-07-01	6606000000.000000
2000-10-01	6501000000.000000
2001-01-01	5743000000.000000
2001-04-01	5776000000.000000
2001-07-01	5022000000.000000
2001-10-01	3778000000.000000
2002-01-01	2072000000.000000
2002-04-01	2157000000.000000
2002-07-01	2292000000.000000
2002-10-01	2470000000.000000
2003-01-01	2510000000.000000
2003-04-01	3344000000.000000
2003-07-01	3713000000.000000
2003-10-01	4284000000.000000
2004-01-01	4663000000.000000
2004-04-01	5482000000.000000
2004-07-01	6027000000.000000
2004-10-01	6275000000.000000
2005-01-01	5966000000.000000
2005-04-01	7580000000.000000
2005-07-01	7443000000.000000
2005-10-01	7699000000.000000
2006-01-01	7372000000.000000
2006-04-01	8230000000.000000
2006-07-01	9302000000.000000
2006-10-01	9248000000.000000
2007-01-01	9164000000.000000
2007-04-01	10182000000.000000
2007-07-01	12695000000.000000
2007-10-01	12665000000.000000
2008-01-01	12852000000.000000
2008-04-01	15326000000.000000
2008-07-01	16517000000.000000
2008-10-01	12768000000.000000
2009-01-01	8311000000.000000
2009-04-01	9056000000.000000
2009-07-01	10510000000.000000
2009-10-01	10909000000.000000
2010-01-01	11067000000.000000
2010-04-01	13827000000.000000
2010-07-01	15983000000.000000
2010-10-01	15916000000.000000
2011-01-01	15295000000.000000
2011-04-01	18728000000.000000
2011-07-01	21419000000.000000
2011-10-01	18520000000.000000
2012-01-01	15236000000.000000
2012-04-01	16791000000.000000
2012-07-01	18476000000.000000
2012-10-01	17473000000.000000
2013-01-01	16152000000.000002
2013-04-01	19864000000.000000
2013-07-01	20091000000.000000
2013-10-01	18335000000.000000
2014-01-01	16576000000.000000
2014-04-01	17281000000.000000
2014-07-01	17433000000.000000
2014-10-01	14445000000.000000
2015-01-01	13507000000.000000
2015-04-01	15643000000.000000
2015-07-01	16893000000.000000
2015-10-01	14162000000.000000
2016-01-01	12775000000.000000
2016-04-01	14343000000.000000
2016-07-01	14633000000.000000
2016-10-01	14101000000.000000
2017-01-01	13936000000.000000
2017-04-01	16934999999.999998
2017-07-01	18326000000.000000
2017-10-01	17733000000.000000
2018-01-01	16893000000.000000
2018-04-01	18007000000.000000
2018-07-01	17188000000.000000