Quarter	Millions of US Dollars
1989-10-01	217782
1990-01-01	230477
1990-04-01	243426
1990-07-01	267053
1990-10-01	283276
1991-01-01	255322
1991-04-01	246835
1991-07-01	274364
1991-10-01	303885
1992-01-01	298517
1992-04-01	338130
1992-07-01	384140
1992-10-01	348453
1993-01-01	352519
1993-04-01	339035
1993-07-01	338539
1993-10-01	325142
1994-01-01	340709
1994-04-01	368927
1994-07-01	387520
1994-10-01	414254
1995-01-01	471069
1995-04-01	476402
1995-07-01	471524
1995-10-01	468853
1996-01-01	463682
1996-04-01	453915
1996-07-01	457597
1996-10-01	455083
1997-01-01	424689
1997-04-01	413357
1997-07-01	405362
1997-10-01	394763
1998-01-01	383200
1998-04-01	391830
1998-07-01	420217
1998-10-01	406664
1999-01-01	381725
1999-04-01	364181
1999-07-01	377300
1999-10-01	352517
2000-01-01	344396
2000-04-01	343799
2000-07-01	318433
2000-10-01	336389
2001-01-01	320224
2001-04-01	309779
2001-07-01	336077
2001-10-01	318421
2002-01-01	318178
2002-04-01	360996
2002-07-01	357638
2002-10-01	380659
2003-01-01	387158
2003-04-01	411958
2003-07-01	419168
2003-10-01	449477
2004-01-01	439926
2004-04-01	434882
2004-07-01	443539
2004-10-01	474887
2005-01-01	447607
2005-04-01	417801
2005-07-01	411691
2005-10-01	400342
2006-01-01	421233
2006-04-01	434867
2006-07-01	433262
2006-10-01	447814
2007-01-01	468425
2007-04-01	491405
2007-07-01	532691
2007-10-01	546861
2008-01-01	593617
2008-04-01	642818
2008-07-01	580800
2008-10-01	610760
2009-01-01	610423
2009-04-01	674621
2009-07-01	727932
2009-10-01	732896
2010-01-01	696106
2010-04-01	639686
2010-07-01	712530
2010-10-01	695753
2011-01-01	755844
2011-04-01	773406
2011-07-01	720487
2011-10-01	717763
2012-01-01	750855
2012-04-01	722376
2012-07-01	728925
2012-10-01	730502
2013-01-01	718323
2013-04-01	741045
2013-07-01	759987
2013-10-01	771069
2014-01-01	789614
2014-04-01	787623
2014-07-01	719530
2014-10-01	689033
2015-01-01	623976
2015-04-01	652105
2015-07-01	651743
2015-10-01	632231
2016-01-01	686407
2016-04-01	682708
2016-07-01	680719
2016-10-01	652029
2017-01-01	678721
2017-04-01	734307
2017-07-01	764179
2017-10-01	757197
2018-01-01	779755