Quarterly US dollars
1999-03-31 1688
1999-06-30 2475
1999-09-30 2180
1999-12-31 1686
2000-03-31 2427
2000-06-30 1519
2000-09-30 1431
2000-12-31 1788
2001-03-31 1822
2001-06-30 1934
2001-09-30 2091
2001-12-31 1428
2002-03-31 2018
2002-06-30 1388
2002-09-30 2035
2002-12-31 1488
2003-03-31 1697
2003-06-30 1467
2003-09-30 1995
2003-12-31 1452
2004-03-31 1437
2004-06-30 1534
2004-09-30 1350
2004-12-31 1427
2005-03-31 1420
2005-06-30 1594
2005-09-30 2014
2005-12-31 1168
2006-03-31 1481
2006-06-30 1499
2006-09-30 1928
2006-12-31 2687
2007-03-31 1763
2007-06-30 1747
2007-09-30 1950
2007-12-31 1844
2008-03-31 2648
2008-06-30 2274
2008-09-30 1677
2008-12-31 1748
2009-03-31 1275
2009-06-30 1418
2009-09-30 1649
2009-12-31 1456
2010-03-31 1757
2010-06-30 2204
2010-09-30 1700
2010-12-31 1268
2011-03-31 2480
2011-06-30 2341
2011-09-30 2894
2011-12-31 4256
2012-03-31 4314
2012-06-30 3410
2012-09-30 2732
2012-12-31 2147
2013-03-31 2485
2013-06-30 1985
2013-09-30 2093
2013-12-31 2247
2014-03-31 28539
2014-06-30 26305
2014-09-30 21784
2014-12-31 17077
2015-03-31 18195
2015-06-30 18007
2015-09-30 16761
2015-12-31 14863
2016-03-31 24015
2016-06-30 23574
2016-09-30 28691
2016-12-31 24690
2017-03-31 29326
2017-06-30 29105
2017-09-30 29563
2017-12-31 31852
2018-03-31 34366
2018-06-30 39606
2018-09-30 40804
2018-12-31 33488
2019-03-31 40370
2019-06-30 42226
2019-09-30 32637
2019-12-31 36438
2020-03-31 33438
2020-06-30 34641
2020-09-30 32685
2020-12-31 33526
2021-03-31 36706
2021-06-30 36580
2021-09-30 32439
2021-12-31 31543
2022-03-31 40327
2022-06-30 33023
2022-09-30 33153
2022-12-31 30260
2023-03-31 35420
2023-06-30 40018
2023-09-30 37624