Quarterly US dollars
1986-09-30 415
1986-12-31 431
1987-03-31 415
1987-06-30 264
1987-09-30 284
1987-12-31 314
1988-03-31 246
1988-06-30 322
1988-09-30 210
1988-12-31 263
1989-03-31 167
1989-06-30 202
1989-09-30 178
1989-12-31 190
1990-03-31 216
1990-06-30 198
1990-09-30 243
1990-12-31 222
1991-03-31 467
1991-06-30 424
1991-09-30 827
1991-12-31 1137
1992-03-31 1148
1992-06-30 1043
1992-09-30 1464
1992-12-31 916
1993-03-31 728
1993-06-30 750
1993-09-30 501
1993-12-31 452
1994-03-31 229
1994-06-30 279
1994-09-30 287
1994-12-31 313
1995-03-31 185
1995-06-30 782
1995-09-30 415
1995-12-31 644
1996-03-31 539
1996-06-30 529
1996-09-30 721
1996-12-31 688
1997-03-31 619
1997-06-30 736
1997-09-30 807
1997-12-31 887
1998-03-31 681
1998-06-30 750
1998-09-30 1293
1998-12-31 1342
1999-03-31 968
1999-06-30 1264
1999-09-30 1311
1999-12-31 1101
2000-03-31 991
2000-06-30 962
2000-09-30 1262
2000-12-31 1218
2001-03-31 718
2001-06-30 961
2001-09-30 772
2001-12-31 754
2002-03-31 1160
2002-06-30 1298
2002-09-30 1401
2002-12-31 1528
2003-03-31 1082
2003-06-30 1401
2003-09-30 1175
2003-12-31 1265
2004-03-31 1687
2004-06-30 1049
2004-09-30 967
2004-12-31 1968
2005-03-31 898
2005-06-30 876
2005-09-30 1555
2005-12-31 2229
2006-03-31 1651
2006-06-30 1224
2006-09-30 1340
2006-12-31 1829
2007-03-31 2505
2007-06-30 3547
2007-09-30 4129
2007-12-31 2530
2008-03-31 2859
2008-06-30 3303
2008-09-30 4366
2008-12-31 3111
2009-03-31 5156
2009-06-30 3308
2009-09-30 3556
2009-12-31 2754
2010-03-31 4717
2010-06-30 4772
2010-09-30 4615
2010-12-31 5311
2011-03-31 5857
2011-06-30 5402
2011-09-30 4551
2011-12-31 3729
2012-03-31 2254
2012-06-30 2826
2012-09-30 2299
2012-12-31 2061
2013-03-31 2312
2013-06-30 1520
2013-09-30 2188
2013-12-31 3123
2014-03-31 2524
2014-06-30 1562
2014-09-30 1784
2014-12-31 1308
2015-03-31 2677
2015-06-30 1999
2015-09-30 1882
2015-12-31 2030
2016-03-31 1676
2016-06-30 1276
2016-09-30 1493
2016-12-31 1447
2017-03-31 1814
2017-06-30 1659
2017-09-30 1778
2017-12-31 2148
2018-03-31 1993
2018-06-30 2080
2018-09-30 2114
2018-12-31 1900
2019-03-31 2805
2019-06-30 2664
2019-09-30 2283
2019-12-31 1922
2020-03-31 2176
2020-06-30 1772
2020-09-30 1890
2020-12-31 1491
2021-03-31 1569
2021-06-30 1812
2021-09-30 1550
2021-12-31 1370
2022-03-31 1675
2022-06-30 1440
2022-09-30 1392
2022-12-31 1398
2023-03-31 1751
2023-06-30 1687
2023-09-30 1559