Quarterly US dollars
1986-09-30 615
1986-12-31 509
1987-03-31 523
1987-06-30 600
1987-09-30 640
1987-12-31 726
1988-03-31 875
1988-06-30 807
1988-09-30 553
1988-12-31 655
1989-03-31 661
1989-06-30 905
1989-09-30 1232
1989-12-31 1436
1990-03-31 1820
1990-06-30 1845
1990-09-30 1641
1990-12-31 1539
1991-03-31 1699
1991-06-30 1516
1991-09-30 1895
1991-12-31 1867
1992-03-31 1601
1992-06-30 2135
1992-09-30 2306
1992-12-31 1295
1993-03-31 1119
1993-06-30 1120
1993-09-30 897
1993-12-31 650
1994-03-31 1059
1994-06-30 1281
1994-09-30 1510
1994-12-31 1112
1995-03-31 1801
1995-06-30 2423
1995-09-30 3188
1995-12-31 2900
1996-03-31 2777
1996-06-30 3178
1996-09-30 2349
1996-12-31 1625
1997-03-31 1652
1997-06-30 1695
1997-09-30 1062
1997-12-31 1978
1998-03-31 1820
1998-06-30 2365
1998-09-30 1970
1998-12-31 2326
1999-03-31 3020
1999-06-30 2005
1999-09-30 1926
1999-12-31 2624
2000-03-31 2993
2000-06-30 3740
2000-09-30 3945
2000-12-31 3680
2001-03-31 4445
2001-06-30 4489
2001-09-30 4236
2001-12-31 4553
2002-03-31 3613
2002-06-30 3562
2002-09-30 2498
2002-12-31 1610
2003-03-31 3731
2003-06-30 2994
2003-09-30 3558
2003-12-31 4894
2004-03-31 4485
2004-06-30 4534
2004-09-30 5016
2004-12-31 4505
2005-03-31 5709
2005-06-30 4410
2005-09-30 4769
2005-12-31 6000
2006-03-31 6811
2006-06-30 6582
2006-09-30 6358
2006-12-31 7468
2007-03-31 6383
2007-06-30 7816
2007-09-30 7850
2007-12-31 9451
2008-03-31 6914
2008-06-30 6211
2008-09-30 5926
2008-12-31 5589
2009-03-31 4582
2009-06-30 5894
2009-09-30 4569
2009-12-31 3252
2010-03-31 2773
2010-06-30 3185
2010-09-30 2961
2010-12-31 2734
2011-03-31 2766
2011-06-30 3086
2011-09-30 3583
2011-12-31 2099
2012-03-31 1515
2012-06-30 1247
2012-09-30 1963
2012-12-31 1835
2013-03-31 1564
2013-06-30 1740
2013-09-30 2013
2013-12-31 2254
2014-03-31 2199
2014-06-30 2390
2014-09-30 2268
2014-12-31 2486
2015-03-31 2226
2015-06-30 2503
2015-09-30 2720
2015-12-31 2969
2016-03-31 3083
2016-06-30 2910
2016-09-30 3562
2016-12-31 1843
2017-03-31 1720
2017-06-30 2013
2017-09-30 2528
2017-12-31 2234
2018-03-31 2173
2018-06-30 3344
2018-09-30 3017
2018-12-31 3691
2019-03-31 2448
2019-06-30 2568
2019-09-30 3006
2019-12-31 2702
2020-03-31 3880
2020-06-30 3588
2020-09-30 2652
2020-12-31 4191
2021-03-31 3447
2021-06-30 3121
2021-09-30 3356
2021-12-31 2442
2022-03-31 3914
2022-06-30 3948
2022-09-30 3811
2022-12-31 4095
2023-03-31 3426
2023-06-30 4293
2023-09-30 3011