Quarter	US dollars
1986-09-30	177308
1986-12-31	191770
1987-03-31	205131
1987-06-30	211340
1987-09-30	210313
1987-12-31	242333
1988-03-31	235723
1988-06-30	228309
1988-09-30	237120
1988-12-31	243395
1989-03-31	247523
1989-06-30	253194
1989-09-30	268915
1989-12-31	291114
1990-03-31	312580
1990-06-30	318766
1990-09-30	348242
1990-12-31	392052
1991-03-31	358435
1991-06-30	327128
1991-09-30	350228
1991-12-31	366158
1992-03-31	337583
1992-06-30	350946
1992-09-30	408744
1992-12-31	396239
1993-03-31	416760
1993-06-30	413859
1993-09-30	442710
1993-12-31	455247
1994-03-31	455903
1994-06-30	463679
1994-09-30	483561
1994-12-31	516675
1995-03-31	578245
1995-06-30	591040
1995-09-30	572897
1995-12-31	586429
1996-03-31	580042
1996-06-30	566018
1996-09-30	574588
1996-12-31	582663
1997-03-31	568431
1997-06-30	557654
1997-09-30	568737
1997-12-31	596265
1998-03-31	636182
1998-06-30	636862
1998-09-30	703941
1998-12-31	627344
1999-03-31	530554
1999-06-30	496213
1999-09-30	520686
1999-12-31	484407
2000-03-31	513739
2000-06-30	519561
2000-09-30	491828
2000-12-31	509973
2001-03-31	593132
2001-06-30	569266
2001-09-30	626921
2001-12-31	594980
2002-03-31	604089
2002-06-30	676682
2002-09-30	714448
2002-12-31	807716
2003-03-31	892768
2003-06-30	989733
2003-09-30	948350
2003-12-31	1030420
2004-03-31	1144805
2004-06-30	1116622
2004-09-30	1197293
2004-12-31	1308440
2005-03-31	1403555
2005-06-30	1367851
2005-09-30	1421735
2005-12-31	1351368
2006-03-31	1498975
2006-06-30	1591378
2006-09-30	1621874
2006-12-31	1731312
2007-03-31	1963126
2007-06-30	2063357
2007-09-30	2125865
2007-12-31	2253344
2008-03-31	2493676
2008-06-30	2369026
2008-09-30	2148423
2008-12-31	2052223
2009-03-31	1923685
2009-06-30	1903436
2009-09-30	1865552
2009-12-31	1864235
2010-03-31	1792910
2010-06-30	1672007
2010-09-30	1826213
2010-12-31	1682825
2011-03-31	1832899
2011-06-30	1865005
2011-09-30	1852566
2011-12-31	1733096
2012-03-31	1848420
2012-06-30	1788714
2012-09-30	1791921
2012-12-31	1831653
2013-03-31	1705109
2013-06-30	1633376
2013-09-30	1566564
2013-12-31	1606518
2014-03-31	1626391
2014-06-30	1637307
2014-09-30	1521502
2014-12-31	1451377
2015-03-31	1426690
2015-06-30	1394851
2015-09-30	1353926
2015-12-31	1263358
2016-03-31	1315741
2016-06-30	1285657
2016-09-30	1249427
2016-12-31	1130983
2017-03-31	1174172
2017-06-30	1245082
2017-09-30	1279452
2017-12-31	1240783
2018-03-31	1328406
2018-06-30	1294393
2018-09-30	1304976
2018-12-31	1269140
2019-03-31	1291496
2019-06-30	1329409
2019-09-30	1327220
2019-12-31	1251109
2020-03-31	1349280
2020-06-30	1340824
2020-09-30	1429400
2020-12-31	1453508
2021-03-31	1415176
2021-06-30	1417143
2021-09-30	1367672
2021-12-31	1359241
2022-03-31	1358858
2022-06-30	1233836
2022-09-30	1172558
2022-12-31	1176720
2023-03-31	1153101
2023-06-30	1162034
2023-09-30	1142406