Quarter	Millions of US Dollars
1994-10-01	4111
1995-01-01	3997
1995-04-01	3871
1995-07-01	2974
1995-10-01	2885
1996-01-01	2516
1996-04-01	2208
1996-07-01	1978
1996-10-01	1725
1997-01-01	1589
1997-04-01	1629
1997-07-01	991
1997-10-01	679
1998-01-01	710
1998-04-01	4205
1998-07-01	5733
1998-10-01	11697
1999-01-01	14068
1999-04-01	15755
1999-07-01	14572
1999-10-01	17164
2000-01-01	16101
2000-04-01	16237
2000-07-01	16590
2000-10-01	16650
2001-01-01	16651
2001-04-01	16318
2001-07-01	17846
2001-10-01	18481
2002-01-01	20490
2002-04-01	21811
2002-07-01	28088
2002-10-01	28952
2003-01-01	28105
2003-04-01	28750
2003-07-01	31590
2003-10-01	31153
2004-01-01	31602
2004-04-01	30727
2004-07-01	35124
2004-10-01	36726
2005-01-01	37081
2005-04-01	34872
2005-07-01	37294
2005-10-01	38229
2006-01-01	42362
2006-04-01	44362
2006-07-01	46326
2006-10-01	48982
2007-01-01	57229
2007-04-01	58487
2007-07-01	58011
2007-10-01	62981
2008-01-01	61636
2008-04-01	59275
2008-07-01	58647
2008-10-01	55673
2009-01-01	61638
2009-04-01	65823
2009-07-01	71157
2009-10-01	70913
2010-01-01	76394
2010-04-01	79201
2010-07-01	85516
2010-10-01	86317
2011-01-01	84185
2011-04-01	83282
2011-07-01	90216
2011-10-01	82911
2012-01-01	90085
2012-04-01	95777
2012-07-01	100091
2012-10-01	100768
2013-01-01	106684
2013-04-01	104055
2013-07-01	107720
2013-10-01	104221
2014-01-01	107690
2014-04-01	106952
2014-07-01	107311
2014-10-01	104955
2015-01-01	111663
2015-04-01	107514
2015-07-01	102323
2015-10-01	108417
2016-01-01	121442
2016-04-01	119936
2016-07-01	126642
2016-10-01	113771
2017-01-01	124268
2017-04-01	124121
2017-07-01	131771
2017-10-01	135813
2018-01-01	143124