Quarterly US dollars
1993-09-30 75
1993-12-31 143
1994-03-31 204
1994-06-30 272
1994-09-30 393
1994-12-31 481
1995-03-31 734
1995-06-30 853
1995-09-30 649
1995-12-31 1108
1996-03-31 407
1996-06-30 470
1996-09-30 466
1996-12-31 561
1997-03-31 512
1997-06-30 429
1997-09-30 472
1997-12-31 432
1998-03-31 433
1998-06-30 716
1998-09-30 485
1998-12-31 203
1999-03-31 126
1999-06-30 265
1999-09-30 389
1999-12-31 246
2000-03-31 526
2000-06-30 200
2000-09-30 379
2000-12-31 155
2001-03-31 173
2001-06-30 214
2001-09-30 235
2001-12-31 411
2002-03-31 333
2002-06-30 256
2002-09-30 370
2002-12-31 162
2003-03-31 468
2003-06-30 207
2003-09-30 983
2003-12-31 749
2004-03-31 1658
2004-06-30 1971
2004-09-30 1393
2004-12-31 1965
2005-03-31 2340
2005-06-30 1104
2005-09-30 1671
2005-12-31 1154
2006-03-31 1770
2006-06-30 1031
2006-09-30 1992
2006-12-31 1338
2007-03-31 2365
2007-06-30 2930
2007-09-30 2369
2007-12-31 1525
2008-03-31 650
2008-06-30 843
2008-09-30 1275
2008-12-31 259
2009-03-31 793
2009-06-30 998
2009-09-30 1551
2009-12-31 1523
2010-03-31 1374
2010-06-30 1611
2010-09-30 1524
2010-12-31 1469
2011-03-31 1874
2011-06-30 1167
2011-09-30 1019
2011-12-31 784
2012-03-31 786
2012-06-30 775
2012-09-30 816
2012-12-31 779
2013-03-31 701
2013-06-30 567
2013-09-30 599
2013-12-31 698
2014-03-31 1013
2014-06-30 696
2014-09-30 1413
2014-12-31 727
2015-03-31 945
2015-06-30 976
2015-09-30 1298
2015-12-31 1318
2016-03-31 1174
2016-06-30 1072
2016-09-30 1260
2016-12-31 1183
2017-03-31 1427
2017-06-30 904
2017-09-30 1537
2017-12-31 1312
2018-03-31 1053
2018-06-30 980
2018-09-30 1432
2018-12-31 1273
2019-03-31 1393
2019-06-30 786
2019-09-30 1077
2019-12-31 829
2020-03-31 1575
2020-06-30 2075
2020-09-30 2140
2020-12-31 1025
2021-03-31 943
2021-06-30 385
2021-09-30 277
2021-12-31 250
2022-03-31 209
2022-06-30 250
2022-09-30 243
2022-12-31 219
2023-03-31 223
2023-06-30 194
2023-09-30 162