Quarter	Millions of US Dollars
1989-10-01	32677
1990-01-01	36196
1990-04-01	37516
1990-07-01	40145
1990-10-01	36562
1991-01-01	39515
1991-04-01	37371
1991-07-01	42857
1991-10-01	42434
1992-01-01	41837
1992-04-01	47508
1992-07-01	44848
1992-10-01	35171
1993-01-01	34666
1993-04-01	36809
1993-07-01	34978
1993-10-01	35517
1994-01-01	39549
1994-04-01	45528
1994-07-01	51661
1994-10-01	47395
1995-01-01	54406
1995-04-01	50478
1995-07-01	48830
1995-10-01	43153
1996-01-01	41647
1996-04-01	40514
1996-07-01	40125
1996-10-01	33756
1997-01-01	38473
1997-04-01	33088
1997-07-01	36556
1997-10-01	29009
1998-01-01	27755
1998-04-01	28395
1998-07-01	31233
1998-10-01	32352
1999-01-01	25798
1999-04-01	23659
1999-07-01	25664
1999-10-01	28201
2000-01-01	29903
2000-04-01	28152
2000-07-01	24293
2000-10-01	25367
2001-01-01	27326
2001-04-01	25167
2001-07-01	26476
2001-10-01	24197
2002-01-01	24853
2002-04-01	27013
2002-07-01	27182
2002-10-01	31306
2003-01-01	30851
2003-04-01	32973
2003-07-01	36623
2003-10-01	41330
2004-01-01	45097
2004-04-01	49860
2004-07-01	47192
2004-10-01	55571
2005-01-01	56308
2005-04-01	51004
2005-07-01	53073
2005-10-01	56531
2006-01-01	64618
2006-04-01	69354
2006-07-01	68250
2006-10-01	73016
2007-01-01	79050
2007-04-01	83789
2007-07-01	87208
2007-10-01	89603
2008-01-01	94434
2008-04-01	100853
2008-07-01	95765
2008-10-01	94313
2009-01-01	88243
2009-04-01	94930
2009-07-01	96767
2009-10-01	100094
2010-01-01	94209
2010-04-01	85255
2010-07-01	91819
2010-10-01	96362
2011-01-01	106215
2011-04-01	113881
2011-07-01	111335
2011-10-01	109611
2012-01-01	112212
2012-04-01	116292
2012-07-01	120459
2012-10-01	120426
2013-01-01	116373
2013-04-01	121056
2013-07-01	128551
2013-10-01	129241
2014-01-01	137711
2014-04-01	136577
2014-07-01	127039
2014-10-01	125071
2015-01-01	108246
2015-04-01	110905
2015-07-01	114035
2015-10-01	110920
2016-01-01	115704
2016-04-01	113766
2016-07-01	113479
2016-10-01	108562
2017-01-01	106667
2017-04-01	112511
2017-07-01	113471
2017-10-01	116783
2018-01-01	126467