Quarter	Millions of US Dollars
1989-10-01	202238
1990-01-01	235529
1990-04-01	262142
1990-07-01	283431
1990-10-01	294825
1991-01-01	277422
1991-04-01	257611
1991-07-01	286049
1991-10-01	311511
1992-01-01	292670
1992-04-01	320380
1992-07-01	306070
1992-10-01	279903
1993-01-01	275482
1993-04-01	263606
1993-07-01	280691
1993-10-01	276935
1994-01-01	290627
1994-04-01	299432
1994-07-01	312785
1994-10-01	317318
1995-01-01	331421
1995-04-01	362088
1995-07-01	367606
1995-10-01	374993
1996-01-01	374958
1996-04-01	366337
1996-07-01	373778
1996-10-01	385583
1997-01-01	354634
1997-04-01	357343
1997-07-01	358239
1997-10-01	356378
1998-01-01	357132
1998-04-01	373873
1998-07-01	406933
1998-10-01	399490
1999-01-01	379687
1999-04-01	372342
1999-07-01	394677
1999-10-01	393366
2000-01-01	370468
2000-04-01	373805
2000-07-01	345710
2000-10-01	372823
2001-01-01	357775
2001-04-01	349731
2001-07-01	382961
2001-10-01	378115
2002-01-01	381227
2002-04-01	441306
2002-07-01	444196
2002-10-01	490235
2003-01-01	525581
2003-04-01	571362
2003-07-01	594497
2003-10-01	682431
2004-01-01	704447
2004-04-01	731241
2004-07-01	774662
2004-10-01	910399
2005-01-01	929738
2005-04-01	940878
2005-07-01	962402
2005-10-01	1008274
2006-01-01	1116860
2006-04-01	1242208
2006-07-01	1295659
2006-10-01	1417358
2007-01-01	1544640
2007-04-01	1655502
2007-07-01	1777139
2007-10-01	1900994
2008-01-01	2026958
2008-04-01	2139075
2008-07-01	1969232
2008-10-01	1977216
2009-01-01	1983331
2009-04-01	2198245
2009-07-01	2314537
2009-10-01	2320729
2010-01-01	2183269
2010-04-01	1983753
2010-07-01	2252713
2010-10-01	2256196
2011-01-01	2462708
2011-04-01	2504431
2011-07-01	2333357
2011-10-01	2303872
2012-01-01	2476594
2012-04-01	2308074
2012-07-01	2349440
2012-10-01	2424925
2013-01-01	2358859
2013-04-01	2362525
2013-07-01	2390602
2013-10-01	2390092
2014-01-01	2354266
2014-04-01	2322453
2014-07-01	2109268
2014-10-01	2021549
2015-01-01	1790995
2015-04-01	1849152
2015-07-01	1854388
2015-10-01	1795853
2016-01-01	1872433
2016-04-01	1836305
2016-07-01	1838858
2016-10-01	1735786
2017-01-01	1764054
2017-04-01	1896250
2017-07-01	1961754
2017-10-01	2015467
2018-01-01	2091587