Quarter	US dollars
1986-09-30	210470
1986-12-31	216840
1987-03-31	222615
1987-06-30	220670
1987-09-30	223547
1987-12-31	256090
1988-03-31	255489
1988-06-30	242631
1988-09-30	243139
1988-12-31	253645
1989-03-31	261574
1989-06-30	268296
1989-09-30	269218
1989-12-31	292480
1990-03-31	314804
1990-06-30	322895
1990-09-30	362478
1990-12-31	385948
1991-03-31	371085
1991-06-30	345768
1991-09-30	365865
1991-12-31	377027
1992-03-31	364069
1992-06-30	387142
1992-09-30	446309
1992-12-31	415788
1993-03-31	425556
1993-06-30	412017
1993-09-30	420206
1993-12-31	423453
1994-03-31	442443
1994-06-30	452466
1994-09-30	471766
1994-12-31	504824
1995-03-31	565283
1995-06-30	574050
1995-09-30	560719
1995-12-31	579484
1996-03-31	592855
1996-06-30	580599
1996-09-30	600807
1996-12-31	606057
1997-03-31	612845
1997-06-30	604582
1997-09-30	642717
1997-12-31	677262
1998-03-31	754707
1998-06-30	781104
1998-09-30	871673
1998-12-31	837094
1999-03-31	755110
1999-06-30	717544
1999-09-30	756562
1999-12-31	718671
2000-03-31	798687
2000-06-30	784385
2000-09-30	759641
2000-12-31	819895
2001-03-31	939963
2001-06-30	895126
2001-09-30	959268
2001-12-31	908884
2002-03-31	886682
2002-06-30	941865
2002-09-30	991612
2002-12-31	1069392
2003-03-31	1137346
2003-06-30	1229429
2003-09-30	1214910
2003-12-31	1334636
2004-03-31	1496658
2004-06-30	1485192
2004-09-30	1514530
2004-12-31	1582022
2005-03-31	1699120
2005-06-30	1674386
2005-09-30	1707528
2005-12-31	1701566
2006-03-31	1852719
2006-06-30	1962938
2006-09-30	2003892
2006-12-31	2149629
2007-03-31	2401825
2007-06-30	2575663
2007-09-30	2725074
2007-12-31	2792139
2008-03-31	3213780
2008-06-30	3068512
2008-09-30	2792386
2008-12-31	2569959
2009-03-31	2419101
2009-06-30	2559258
2009-09-30	2527481
2009-12-31	2426912
2010-03-31	2388824
2010-06-30	2296054
2010-09-30	2511626
2010-12-31	2293261
2011-03-31	2389306
2011-06-30	2409597
2011-09-30	2413691
2011-12-31	2217520
2012-03-31	2423201
2012-06-30	2332347
2012-09-30	2258524
2012-12-31	2202724
2013-03-31	2050985
2013-06-30	1997594
2013-09-30	1858001
2013-12-31	1781466
2014-03-31	1850593
2014-06-30	1813618
2014-09-30	1695331
2014-12-31	1634371
2015-03-31	1623910
2015-06-30	1597806
2015-09-30	1593946
2015-12-31	1517653
2016-03-31	1589442
2016-06-30	1621539
2016-09-30	1637852
2016-12-31	1514238
2017-03-31	1591268
2017-06-30	1668639
2017-09-30	1735464
2017-12-31	1763486
2018-03-31	1834549
2018-06-30	1753634
2018-09-30	1769009
2018-12-31	1680989
2019-03-31	1677395
2019-06-30	1706178
2019-09-30	1683985
2019-12-31	1550334
2020-03-31	1675277
2020-06-30	1638377
2020-09-30	1709935
2020-12-31	1769008
2021-03-31	1797377
2021-06-30	1784989
2021-09-30	1680635
2021-12-31	1645614
2022-03-31	1704069
2022-06-30	1655728
2022-09-30	1566573
2022-12-31	1568535
2023-03-31	1596901
2023-06-30	1566476
2023-09-30	1504061