Quarterly US dollars
1999-03-31 234
1999-06-30 342
1999-09-30 335
1999-12-31 416
2000-03-31 427
2000-06-30 452
2000-09-30 305
2000-12-31 331
2001-03-31 618
2001-06-30 1211
2001-09-30 1261
2001-12-31 1358
2002-03-31 1341
2002-06-30 1634
2002-09-30 1416
2002-12-31 961
2003-03-31 1225
2003-06-30 1293
2003-09-30 1251
2003-12-31 922
2004-03-31 863
2004-06-30 954
2004-09-30 1311
2004-12-31 815
2005-03-31 1294
2005-06-30 1393
2005-09-30 1894
2005-12-31 2400
2006-03-31 2229
2006-06-30 2586
2006-09-30 2191
2006-12-31 2901
2007-03-31 2760
2007-06-30 3714
2007-09-30 3512
2007-12-31 5151
2008-03-31 4643
2008-06-30 7317
2008-09-30 7893
2008-12-31 3215
2009-03-31 4246
2009-06-30 2308
2009-09-30 2561
2009-12-31 2388
2010-03-31 3304
2010-06-30 3761
2010-09-30 4917
2010-12-31 4298
2011-03-31 4602
2011-06-30 4416
2011-09-30 2343
2011-12-31 2070
2012-03-31 1801
2012-06-30 1967
2012-09-30 2227
2012-12-31 2858
2013-03-31 1877
2013-06-30 2124
2013-09-30 1640
2013-12-31 1588
2014-03-31 1956
2014-06-30 1720
2014-09-30 2137
2014-12-31 7230
2015-03-31 2533
2015-06-30 1872
2015-09-30 1998
2015-12-31 1944
2016-03-31 1859
2016-06-30 1965
2016-09-30 1842
2016-12-31 2527
2017-03-31 1815
2017-06-30 1917
2017-09-30 1943
2017-12-31 2816
2018-03-31 2931
2018-06-30 2821
2018-09-30 1999
2018-12-31 2809
2019-03-31 2810
2019-06-30 2976
2019-09-30 2836
2019-12-31 1750
2020-03-31 1627
2020-06-30 1867
2020-09-30 1665
2020-12-31 1697
2021-03-31 1442
2021-06-30 1664
2021-09-30 1422
2021-12-31 1440
2022-03-31 1255
2022-06-30 1381
2022-09-30 1225
2022-12-31 1235
2023-03-31 1170
2023-06-30 1628
2023-09-30 1608