Quarter	US Dollars, monthly level
1990-01-01	2771000000.0000000
1990-04-01	3197000000.0000000
1990-07-01	3431000000.0000000
1990-10-01	2955000000.0000000
1991-01-01	2348000000.0000000
1991-04-01	3372000000.0000000
1991-07-01	3455000000.0000000
1991-10-01	2803000000.0000000
1992-01-01	2563000000.0000000
1992-04-01	3329000000.0000000
1992-07-01	3335000000.0000000
1992-10-01	3010000000.0000000
1993-01-01	2887000000.0000000
1993-04-01	3578000000.0000000
1993-07-01	3436000000.0000000
1993-10-01	3219000000.0000000
1994-01-01	3056000000.0000000
1994-04-01	4277999999.9999995
1994-07-01	4256999999.9999995
1994-10-01	4248000000.0000000
1995-01-01	4536000000.0000000
1995-04-01	6316000000.0000000
1995-07-01	5273000000.0000000
1995-10-01	4837000000.0000000
1996-01-01	4738000000.0000000
1996-04-01	6605000000.0000000
1996-07-01	6438000000.0000000
1996-10-01	6028000000.0000000
1997-01-01	5774000000.0000000
1997-04-01	7248000000.0000000
1997-07-01	6991000000.0000000
1997-10-01	6418000000.0000000
1998-01-01	5889000000.0000000
1998-04-01	7686000000.0000000
1998-07-01	7027000000.0000000
1998-10-01	5830000000.0000000
1999-01-01	5066000000.0000000
1999-04-01	6383000000.0000000
1999-07-01	5938000000.0000000
1999-10-01	5922000000.0000000
2000-01-01	5712000000.0000000
2000-04-01	7315000000.0000000
2000-07-01	6738000000.0000000
2000-10-01	6575000000.0000000
2001-01-01	5908000000.0000000
2001-04-01	7504000000.0000000
2001-07-01	7055000000.0000000
2001-10-01	6074000000.0000000
2002-01-01	5712000000.0000000
2002-04-01	6777000000.0000000
2002-07-01	6719000000.0000000
2002-10-01	6442000000.0000000
2003-01-01	6575000000.0000000
2003-04-01	8455999999.9999990
2003-07-01	7552000000.0000000
2003-10-01	7357000000.0000000
2004-01-01	7375000000.0000000
2004-04-01	9385000000.0000000
2004-07-01	8981000000.0000000
2004-10-01	8835000000.0000000
2005-01-01	8441000000.0000010
2005-04-01	10706000000.0000000
2005-07-01	10921000000.0000000
2005-10-01	10318000000.0000000
2006-01-01	9926000000.0000000
2006-04-01	11954000000.0000000
2006-07-01	12111000000.0000000
2006-10-01	12555000000.0000000
2007-01-01	11150000000.0000000
2007-04-01	13676000000.0000000
2007-07-01	14364000000.0000000
2007-10-01	16792000000.0000020
2008-01-01	16035000000.0000000
2008-04-01	17493000000.0000000
2008-07-01	21297000000.0000000
2008-10-01	15195000000.0000000
2009-01-01	11924000000.0000000
2009-04-01	15466000000.0000000
2009-07-01	13808000000.0000000
2009-10-01	14474000000.0000000
2010-01-01	13054000000.0000000
2010-04-01	19080000000.0000000
2010-07-01	18742000000.0000000
2010-10-01	17298000000.0000000
2011-01-01	16681000000.0000000
2011-04-01	22793000000.0000000
2011-07-01	23272000000.0000000
2011-10-01	20234000000.0000000
2012-01-01	17604000000.0000000
2012-04-01	20618000000.0000000
2012-07-01	21909000000.0000000
2012-10-01	19851000000.0000000
2013-01-01	16449000000.0000020
2013-04-01	22771000000.0000000
2013-07-01	20676000000.0000000
2013-10-01	16068000000.0000020
2014-01-01	13836000000.0000000
2014-04-01	20862000000.0000000
2014-07-01	18522000000.0000000
2014-10-01	15185000000.0000000
2015-01-01	12049000000.0000000
2015-04-01	16407000000.0000000
2015-07-01	15867000000.0000000
2015-10-01	12461000000.0000000
2016-01-01	12443000000.0000000
2016-04-01	15428000000.0000000
2016-07-01	15816000000.0000000
2016-10-01	14223000000.0000000
2017-01-01	12754000000.0000000
2017-04-01	15512000000.0000000
2017-07-01	15831000000.0000000
2017-10-01	14525000000.0000000
2018-01-01	14520000000.0000000
2018-04-01	15515000000.0000000
2018-07-01	15599000000.0000000