Quarter	US dollars
1986-09-30	874
1986-12-31	885
1987-03-31	894
1987-06-30	967
1987-09-30	1113
1987-12-31	1348
1988-03-31	1226
1988-06-30	1183
1988-09-30	1262
1988-12-31	1416
1989-03-31	1299
1989-06-30	1283
1989-09-30	1377
1989-12-31	1468
1990-03-31	1459
1990-06-30	1522
1990-09-30	1710
1990-12-31	1740
1991-03-31	1492
1991-06-30	1496
1991-09-30	1649
1991-12-31	1946
1992-03-31	1753
1992-06-30	1870
1992-09-30	2064
1992-12-31	1778
1993-03-31	1878
1993-06-30	1873
1993-09-30	1942
1993-12-31	1909
1994-03-31	1891
1994-06-30	2068
1994-09-30	1935
1994-12-31	2128
1995-03-31	1937
1995-06-30	1846
1995-09-30	1788
1995-12-31	1791
1996-03-31	1662
1996-06-30	1657
1996-09-30	1626
1996-12-31	1674
1997-03-31	1713
1997-06-30	1793
1997-09-30	1407
1997-12-31	1354
1998-03-31	1368
1998-06-30	1499
1998-09-30	1588
1998-12-31	1395
1999-03-31	1360
1999-06-30	1328
1999-09-30	1384
1999-12-31	1327
2000-03-31	1222
2000-06-30	1018
2000-09-30	966
2000-12-31	1035
2001-03-31	963
2001-06-30	959
2001-09-30	981
2001-12-31	1104
2002-03-31	1099
2002-06-30	1838
2002-09-30	1371
2002-12-31	1523
2003-03-31	1449
2003-06-30	1346
2003-09-30	1607
2003-12-31	1728
2004-03-31	1548
2004-06-30	1433
2004-09-30	1390
2004-12-31	1153
2005-03-31	1093
2005-06-30	951
2005-09-30	903
2005-12-31	1560
2006-03-31	1470
2006-06-30	1867
2006-09-30	2441
2006-12-31	2600
2007-03-31	2936
2007-06-30	3933
2007-09-30	7683
2007-12-31	8591
2008-03-31	9969
2008-06-30	9828
2008-09-30	9091
2008-12-31	11010
2009-03-31	8869
2009-06-30	8747
2009-09-30	8639
2009-12-31	9176
2010-03-31	8459
2010-06-30	6617
2010-09-30	6623
2010-12-31	5385
2011-03-31	5135
2011-06-30	5378
2011-09-30	3453
2011-12-31	4160
2012-03-31	3829
2012-06-30	4589
2012-09-30	3191
2012-12-31	3337
2013-03-31	4317
2013-06-30	3454
2013-09-30	4970
2013-12-31	3687
2014-03-31	2018
2014-06-30	2099
2014-09-30	1962
2014-12-31	2247
2015-03-31	2673
2015-06-30	1998
2015-09-30	1845
2015-12-31	1948
2016-03-31	2948
2016-06-30	2332
2016-09-30	2024
2016-12-31	1926
2017-03-31	2325
2017-06-30	2365
2017-09-30	2279
2017-12-31	2449
2018-03-31	2436
2018-06-30	2469
2018-09-30	3398
2018-12-31	2640
2019-03-31	1799
2019-06-30	1844
2019-09-30	1659
2019-12-31	1987
2020-03-31	2675
2020-06-30	2544
2020-09-30	2554
2020-12-31	2848
2021-03-31	2715
2021-06-30	2607
2021-09-30	2273
2021-12-31	2309
2022-03-31	1887
2022-06-30	1899
2022-09-30	1601
2022-12-31	1521
2023-03-31	1325
2023-06-30	1373
2023-09-30	1232