Quarter	US Dollars, Monthly Level
1988-01-01	2510700000.0000000
1988-04-01	2275400000.0000000
1988-07-01	2080700000.0000002
1988-10-01	2505000000.0000000
1989-01-01	2643300000.0000000
1989-04-01	2553200000.0000000
1989-07-01	2519100000.0000000
1989-10-01	2846600000.0000000
1990-01-01	2885900000.0000000
1990-04-01	2646200000.0000000
1990-07-01	2808100000.0000000
1990-10-01	3109700000.0000000
1991-01-01	2795400000.0000000
1991-04-01	2605300000.0000000
1991-07-01	2485300000.0000000
1991-10-01	3166200000.0000000
1992-01-01	2913300000.0000000
1992-04-01	2943700000.0000000
1992-07-01	3118100000.0000000
1992-10-01	3278800000.0000000
1993-01-01	3512700000.0000000
1993-04-01	3201500000.0000000
1993-07-01	3397800000.0000000
1993-10-01	3751000000.0000000
1994-01-01	3800600000.0000000
1994-04-01	3894900000.0000000
1994-07-01	3567400000.0000000
1994-10-01	4590200000.0000000
1995-01-01	4294200000.0000000
1995-04-01	4345200000.0000000
1995-07-01	4269599999.9999995
1995-10-01	4701500000.0000000
1996-01-01	4709900000.0000000
1996-04-01	4356200000.0000000
1996-07-01	4570300000.0000000
1996-10-01	5127200000.0000000
1997-01-01	5148100000.0000000
1997-04-01	4919200000.0000000
1997-07-01	5171300000.0000000
1997-10-01	5059900000.0000000
1998-01-01	5332100000.0000000
1998-04-01	5169300000.0000000
1998-07-01	4893100000.0000000
1998-10-01	5238800000.0000000
1999-01-01	5249200000.0000000
1999-04-01	5368900000.0000000
1999-07-01	5745000000.0000000
1999-10-01	6415000000.0000000
2000-01-01	6810000000.0000000
2000-04-01	6836400000.0000000
2000-07-01	7178000000.0000000
2000-10-01	7516400000.0000000
2001-01-01	7078400000.0000000
2001-04-01	6347600000.0000000
2001-07-01	6084800000.0000000
2001-10-01	6207400000.0000000
2002-01-01	6316700000.0000000
2002-04-01	6453600000.0000000
2002-07-01	6228600000.0000000
2002-10-01	6640100000.0000000
2003-01-01	7145400000.0000000
2003-04-01	6533300000.0000000
2003-07-01	6812800000.0000000
2003-10-01	7421800000.0000000
2004-01-01	8469900000.0000010
2004-04-01	8343199999.9999990
2004-07-01	8104799999.9999990
2004-10-01	8894700000.0000000
2005-01-01	9503100000.0000000
2005-04-01	9128600000.0000000
2005-07-01	9395100000.0000000
2005-10-01	8584000000.0000000
2006-01-01	9611000000.0000000
2006-04-01	10205000000.0000000
2006-07-01	9525200000.0000000
2006-10-01	10359300000.0000000
2007-01-01	11076000000.0000000
2007-04-01	11204900000.0000000
2007-07-01	10911800000.0000000
2007-10-01	12723800000.0000000
2008-01-01	13463800000.0000000
2008-04-01	13931100000.0000000
2008-07-01	13552100000.0000000
2008-10-01	10373700000.0000000
2009-01-01	9412100000.0000000
2009-04-01	9638800000.0000000
2009-07-01	10581700000.0000000
2009-10-01	12432800000.0000000
2010-01-01	12725400000.0000000
2010-04-01	13049900000.0000000
2010-07-01	12043800000.0000000
2010-10-01	13059500000.0000000
2011-01-01	14782500000.0000000
2011-04-01	15098200000.0000000
2011-07-01	14604700000.0000000
2011-10-01	13646700000.0000000
2012-01-01	13894600000.0000000
2012-04-01	13719000000.0000000
2012-07-01	13093700000.0000000
2012-10-01	13264800000.0000000
2013-01-01	14336100000.0000000
2013-04-01	14659200000.0000000
2013-07-01	12737100000.0000000
2013-10-01	15138500000.0000000
2014-01-01	15842300000.0000000
2014-04-01	13955400000.0000000
2014-07-01	13971000000.0000000
2014-10-01	13898700000.0000000
2015-01-01	14529600000.0000000
2015-04-01	13134300000.0000000
2015-07-01	12268800000.0000000
2015-10-01	13601300000.0000000
2016-01-01	13508000000.0000000
2016-04-01	12712600000.0000000
2016-07-01	12786900000.0000000
2016-10-01	13180800000.0000000
2017-01-01	14267100000.0000000
2017-04-01	12916100000.0000000
2017-07-01	12175200000.0000000
2017-10-01	13641500000.0000000
2018-01-01	14693000000.0000000
2018-04-01	13635900000.0000000
2018-07-01	11854100000.0000000