Quarterly US dollars
1999-03-31 4077
1999-06-30 3970
1999-09-30 3363
1999-12-31 3735
2000-03-31 3549
2000-06-30 3552
2000-09-30 3440
2000-12-31 3531
2001-03-31 2830
2001-06-30 2646
2001-09-30 2140
2001-12-31 1683
2002-03-31 1615
2002-06-30 1649
2002-09-30 1687
2002-12-31 1634
2003-03-31 1678
2003-06-30 1721
2003-09-30 1808
2003-12-31 1951
2004-03-31 2160
2004-06-30 2348
2004-09-30 2446
2004-12-31 2368
2005-03-31 2299
2005-06-30 2350
2005-09-30 3336
2005-12-31 3264
2006-03-31 3376
2006-06-30 3459
2006-09-30 3600
2006-12-31 3428
2007-03-31 3304
2007-06-30 4873
2007-09-30 4513
2007-12-31 4540
2008-03-31 4403
2008-06-30 4725
2008-09-30 3754
2008-12-31 3223
2009-03-31 2905
2009-06-30 2655
2009-09-30 2248
2009-12-31 2092
2010-03-31 2460
2010-06-30 2293
2010-09-30 2409
2010-12-31 2364
2011-03-31 2426
2011-06-30 2263
2011-09-30 2219
2011-12-31 1976
2012-03-31 2326
2012-06-30 1884
2012-09-30 1625
2012-12-31 1415
2013-03-31 1335
2013-06-30 1478
2013-09-30 1521
2013-12-31 1382
2014-03-31 1457
2014-06-30 1641
2014-09-30 1185
2014-12-31 1134
2015-03-31 1263
2015-06-30 1475
2015-09-30 1768
2015-12-31 1705
2016-03-31 1867
2016-06-30 1911
2016-09-30 2024
2016-12-31 1541
2017-03-31 1918
2017-06-30 1652
2017-09-30 2697
2017-12-31 3029
2018-03-31 3220
2018-06-30 3011
2018-09-30 3831
2018-12-31 3855
2019-03-31 3012
2019-06-30 2398
2019-09-30 1202
2019-12-31 1201
2020-03-31 946
2020-06-30 677
2020-09-30 647
2020-12-31 555
2021-03-31 524
2021-06-30 605
2021-09-30 541
2021-12-31 517
2022-03-31 448
2022-06-30 276
2022-09-30 310
2022-12-31 308
2023-03-31 408
2023-06-30 332
2023-09-30 302