Quarter	Millions of US Dollars
1989-10-01	226607
1990-01-01	230782
1990-04-01	242386
1990-07-01	269591
1990-10-01	281898
1991-01-01	249245
1991-04-01	244499
1991-07-01	272788
1991-10-01	295502
1992-01-01	291522
1992-04-01	330847
1992-07-01	378440
1992-10-01	332057
1993-01-01	354280
1993-04-01	363707
1993-07-01	384962
1993-10-01	373021
1994-01-01	408244
1994-04-01	441867
1994-07-01	485156
1994-10-01	480115
1995-01-01	563278
1995-04-01	587321
1995-07-01	607198
1995-10-01	596434
1996-01-01	606973
1996-04-01	629175
1996-07-01	655120
1996-10-01	637672
1997-01-01	601553
1997-04-01	611391
1997-07-01	611519
1997-10-01	605730
1998-01-01	604775
1998-04-01	627654
1998-07-01	703451
1998-10-01	699841
1999-01-01	657860
1999-04-01	631309
1999-07-01	666849
1999-10-01	624019
2000-01-01	597806
2000-04-01	612712
2000-07-01	567952
2000-10-01	606132
2001-01-01	583341
2001-04-01	580062
2001-07-01	634743
2001-10-01	609942
2002-01-01	621138
2002-04-01	735614
2002-07-01	726017
2002-10-01	787627
2003-01-01	854742
2003-04-01	941164
2003-07-01	978141
2003-10-01	1055754
2004-01-01	1052165
2004-04-01	1078848
2004-07-01	1107922
2004-10-01	1235695
2005-01-01	1222967
2005-04-01	1160414
2005-07-01	1158485
2005-10-01	1141248
2006-01-01	1212321
2006-04-01	1261479
2006-07-01	1266440
2006-10-01	1301098
2007-01-01	1350642
2007-04-01	1403937
2007-07-01	1474306
2007-10-01	1513535
2008-01-01	1667587
2008-04-01	1681165
2008-07-01	1546931
2008-10-01	1563386
2009-01-01	1568190
2009-04-01	1746478
2009-07-01	1832305
2009-10-01	1842914
2010-01-01	1762256
2010-04-01	1663005
2010-07-01	1849424
2010-10-01	1837698
2011-01-01	2020699
2011-04-01	2135881
2011-07-01	1991483
2011-10-01	1925787
2012-01-01	2082239
2012-04-01	2003951
2012-07-01	2041651
2012-10-01	2064233
2013-01-01	2057804
2013-04-01	2145698
2013-07-01	2197386
2013-10-01	2261689
2014-01-01	2337848
2014-04-01	2352527
2014-07-01	2161538
2014-10-01	2084315
2015-01-01	1901473
2015-04-01	1987437
2015-07-01	1993989
2015-10-01	1934527
2016-01-01	2074487
2016-04-01	2049716
2016-07-01	2051177
2016-10-01	1920959
2017-01-01	2019600
2017-04-01	2172347
2017-07-01	2244002
2017-10-01	2257529
2018-01-01	2360432