Quarterly US dollars
1986-09-30 1792
1986-12-31 1817
1987-03-31 1888
1987-06-30 1883
1987-09-30 1881
1987-12-31 2009
1988-03-31 1903
1988-06-30 2030
1988-09-30 1913
1988-12-31 1939
1989-03-31 1800
1989-06-30 1970
1989-09-30 2079
1989-12-31 2398
1990-03-31 2598
1990-06-30 2657
1990-09-30 3338
1990-12-31 3322
1991-03-31 3148
1991-06-30 3292
1991-09-30 3116
1991-12-31 3187
1992-03-31 3148
1992-06-30 3263
1992-09-30 3446
1992-12-31 3584
1993-03-31 3420
1993-06-30 3661
1993-09-30 4063
1993-12-31 4836
1994-03-31 4277
1994-06-30 3951
1994-09-30 3247
1994-12-31 2876
1995-03-31 2902
1995-06-30 3107
1995-09-30 3483
1995-12-31 3480
1996-03-31 3507
1996-06-30 3703
1996-09-30 4221
1996-12-31 5057
1997-03-31 5188
1997-06-30 5910
1997-09-30 6323
1997-12-31 6304
1998-03-31 6829
1998-06-30 8030
1998-09-30 7636
1998-12-31 6702
1999-03-31 7340
1999-06-30 6847
1999-09-30 7410
1999-12-31 7442
2000-03-31 7700
2000-06-30 8370
2000-09-30 9358
2000-12-31 9808
2001-03-31 8639
2001-06-30 6581
2001-09-30 7317
2001-12-31 6277
2002-03-31 6215
2002-06-30 6281
2002-09-30 5608
2002-12-31 5785
2003-03-31 5776
2003-06-30 5258
2003-09-30 6204
2003-12-31 7067
2004-03-31 8072
2004-06-30 9619
2004-09-30 9503
2004-12-31 10963
2005-03-31 12972
2005-06-30 12642
2005-09-30 13002
2005-12-31 16246
2006-03-31 19364
2006-06-30 17301
2006-09-30 22021
2006-12-31 24646
2007-03-31 24571
2007-06-30 24780
2007-09-30 28036
2007-12-31 28407
2008-03-31 29378
2008-06-30 29769
2008-09-30 28452
2008-12-31 25136
2009-03-31 22135
2009-06-30 23900
2009-09-30 25618
2009-12-31 25678
2010-03-31 26237
2010-06-30 27503
2010-09-30 28820
2010-12-31 32423
2011-03-31 40010
2011-06-30 42982
2011-09-30 32965
2011-12-31 31839
2012-03-31 32152
2012-06-30 37580
2012-09-30 38620
2012-12-31 42308
2013-03-31 41362
2013-06-30 44201
2013-09-30 41548
2013-12-31 43491
2014-03-31 38655
2014-06-30 42229
2014-09-30 41421
2014-12-31 41284
2015-03-31 38487
2015-06-30 38173
2015-09-30 38593
2015-12-31 38840
2016-03-31 41343
2016-06-30 40078
2016-09-30 39929
2016-12-31 33699
2017-03-31 33051
2017-06-30 32073
2017-09-30 33199
2017-12-31 34695
2018-03-31 35568
2018-06-30 36151
2018-09-30 31827
2018-12-31 29010
2019-03-31 30810
2019-06-30 27440
2019-09-30 25549
2019-12-31 24171
2020-03-31 21063
2020-06-30 20539
2020-09-30 22490
2020-12-31 24114
2021-03-31 25213
2021-06-30 23972
2021-09-30 23416
2021-12-31 23817
2022-03-31 22867
2022-06-30 22704
2022-09-30 21824
2022-12-31 22921
2023-03-31 23062
2023-06-30 24120
2023-09-30 23021