Quarterly US dollars
1986-09-30 279
1986-12-31 318
1987-03-31 220
1987-06-30 348
1987-09-30 442
1987-12-31 308
1988-03-31 333
1988-06-30 397
1988-09-30 180
1988-12-31 212
1989-03-31 298
1989-06-30 378
1989-09-30 523
1989-12-31 622
1990-03-31 543
1990-06-30 703
1990-09-30 1145
1990-12-31 1510
1991-03-31 1179
1991-06-30 942
1991-09-30 906
1991-12-31 719
1992-03-31 709
1992-06-30 692
1992-09-30 1059
1992-12-31 1228
1993-03-31 1123
1993-06-30 1282
1993-09-30 1362
1993-12-31 2169
1994-03-31 1963
1994-06-30 1844
1994-09-30 1821
1994-12-31 2602
1995-03-31 2935
1995-06-30 2917
1995-09-30 2837
1995-12-31 3028
1996-03-31 3061
1996-06-30 2822
1996-09-30 2812
1996-12-31 2798
1997-03-31 2652
1997-06-30 2296
1997-09-30 2551
1997-12-31 2944
1998-03-31 2877
1998-06-30 2279
1998-09-30 1988
1998-12-31 1853
1999-03-31 1123
1999-06-30 746
1999-09-30 399
1999-12-31 227
2000-03-31 246
2000-06-30 261
2000-09-30 305
2000-12-31 377
2001-03-31 699
2001-06-30 913
2001-09-30 937
2001-12-31 989
2002-03-31 985
2002-06-30 600
2002-09-30 702
2002-12-31 931
2003-03-31 943
2003-06-30 941
2003-09-30 841
2003-12-31 996
2004-03-31 1047
2004-06-30 780
2004-09-30 878
2004-12-31 847
2005-03-31 893
2005-06-30 1214
2005-09-30 1283
2005-12-31 883
2006-03-31 1602
2006-06-30 2195
2006-09-30 1703
2006-12-31 2719
2007-03-31 2166
2007-06-30 3123
2007-09-30 3406
2007-12-31 3822
2008-03-31 3918
2008-06-30 4253
2008-09-30 3933
2008-12-31 2345
2009-03-31 3285
2009-06-30 3225
2009-09-30 3770
2009-12-31 3793
2010-03-31 3731
2010-06-30 3738
2010-09-30 3980
2010-12-31 3963
2011-03-31 3200
2011-06-30 2793
2011-09-30 1921
2011-12-31 1881
2012-03-31 2122
2012-06-30 1420
2012-09-30 1588
2012-12-31 2212
2013-03-31 2012
2013-06-30 2243
2013-09-30 2652
2013-12-31 2332
2014-03-31 1427
2014-06-30 1864
2014-09-30 2464
2014-12-31 4224
2015-03-31 2943
2015-06-30 2909
2015-09-30 3675
2015-12-31 3934
2016-03-31 2975
2016-06-30 3457
2016-09-30 2676
2016-12-31 2661
2017-03-31 1822
2017-06-30 2497
2017-09-30 1741
2017-12-31 1372
2018-03-31 1680
2018-06-30 1491
2018-09-30 1391
2018-12-31 1782
2019-03-31 1529
2019-06-30 1665
2019-09-30 1890
2019-12-31 2209
2020-03-31 1780
2020-06-30 1726
2020-09-30 1762
2020-12-31 1530
2021-03-31 1170
2021-06-30 927
2021-09-30 1000
2021-12-31 833
2022-03-31 1431
2022-06-30 2056
2022-09-30 2171
2022-12-31 1070
2023-03-31 887
2023-06-30 971
2023-09-30 758