Quarterly US dollars
1986-09-30 57
1986-12-31 48
1987-03-31 37
1987-06-30 34
1987-09-30 44
1987-12-31 67
1988-03-31 42
1988-06-30 48
1988-09-30 48
1988-12-31 47
1989-03-31 60
1989-06-30 57
1989-09-30 56
1989-12-31 64
1990-03-31 50
1990-06-30 74
1990-09-30 108
1990-12-31 82
1991-03-31 90
1991-06-30 75
1991-09-30 93
1991-12-31 83
1992-03-31 85
1992-06-30 361
1992-09-30 141
1992-12-31 223
1993-03-31 159
1993-06-30 138
1993-09-30 67
1993-12-31 113
1994-03-31 100
1994-06-30 44
1994-09-30 60
1994-12-31 81
1995-03-31 73
1995-06-30 122
1995-09-30 168
1995-12-31 178
1996-03-31 450
1996-06-30 209
1996-09-30 169
1996-12-31 173
1997-03-31 125
1997-06-30 166
1997-09-30 119
1997-12-31 107
1998-03-31 112
1998-06-30 99
1998-09-30 79
1998-12-31 97
1999-03-31 85
1999-06-30 97
1999-09-30 134
1999-12-31 148
2000-03-31 125
2000-06-30 145
2000-09-30 272
2000-12-31 229
2001-03-31 397
2001-06-30 495
2001-09-30 505
2001-12-31 451
2002-03-31 429
2002-06-30 775
2002-09-30 425
2002-12-31 199
2003-03-31 178
2003-06-30 191
2003-09-30 200
2003-12-31 152
2004-03-31 137
2004-06-30 175
2004-09-30 438
2004-12-31 746
2005-03-31 718
2005-06-30 919
2005-09-30 1413
2005-12-31 1468
2006-03-31 1544
2006-06-30 1915
2006-09-30 2104
2006-12-31 2740
2007-03-31 3194
2007-06-30 3645
2007-09-30 4441
2007-12-31 5166
2008-03-31 5983
2008-06-30 9122
2008-09-30 11887
2008-12-31 9630
2009-03-31 6270
2009-06-30 5931
2009-09-30 5443
2009-12-31 5668
2010-03-31 4506
2010-06-30 4512
2010-09-30 4894
2010-12-31 5810
2011-03-31 6780
2011-06-30 8928
2011-09-30 10356
2011-12-31 6634
2012-03-31 10820
2012-06-30 11478
2012-09-30 10749
2012-12-31 10881
2013-03-31 11774
2013-06-30 11296
2013-09-30 9190
2013-12-31 7395
2014-03-31 8944
2014-06-30 10205
2014-09-30 7437
2014-12-31 8991
2015-03-31 9205
2015-06-30 8220
2015-09-30 8527
2015-12-31 7142
2016-03-31 7295
2016-06-30 7762
2016-09-30 6672
2016-12-31 7069
2017-03-31 7785
2017-06-30 7032
2017-09-30 8327
2017-12-31 5845
2018-03-31 6846
2018-06-30 6783
2018-09-30 6116
2018-12-31 7071
2019-03-31 6153
2019-06-30 6088
2019-09-30 6441
2019-12-31 6996
2020-03-31 6660
2020-06-30 7045
2020-09-30 7125
2020-12-31 7075
2021-03-31 4719
2021-06-30 4320
2021-09-30 7726
2021-12-31 7460
2022-03-31 8392
2022-06-30 9097
2022-09-30 9601
2022-12-31 8742
2023-03-31 8415
2023-06-30 8030
2023-09-30 7848