Quarterly US dollars
1999-03-31 858
1999-06-30 1044
1999-09-30 1178
1999-12-31 1331
2000-03-31 1488
2000-06-30 1442
2000-09-30 1580
2000-12-31 1788
2001-03-31 1569
2001-06-30 1622
2001-09-30 1939
2001-12-31 1973
2002-03-31 1736
2002-06-30 1436
2002-09-30 1549
2002-12-31 2061
2003-03-31 1962
2003-06-30 1739
2003-09-30 2240
2003-12-31 2306
2004-03-31 2468
2004-06-30 2567
2004-09-30 2839
2004-12-31 2401
2005-03-31 2318
2005-06-30 2963
2005-09-30 2752
2005-12-31 2285
2006-03-31 2389
2006-06-30 2114
2006-09-30 1491
2006-12-31 1893
2007-03-31 2645
2007-06-30 3540
2007-09-30 4151
2007-12-31 3946
2008-03-31 4722
2008-06-30 4309
2008-09-30 4855
2008-12-31 4234
2009-03-31 3972
2009-06-30 4108
2009-09-30 4679
2009-12-31 5363
2010-03-31 4100
2010-06-30 4302
2010-09-30 4548
2010-12-31 4114
2011-03-31 3351
2011-06-30 3302
2011-09-30 4176
2011-12-31 3047
2012-03-31 3074
2012-06-30 3632
2012-09-30 3384
2012-12-31 3001
2013-03-31 3377
2013-06-30 2780
2013-09-30 2487
2013-12-31 2941
2014-03-31 2816
2014-06-30 2237
2014-09-30 2333
2014-12-31 2504
2015-03-31 3238
2015-06-30 3072
2015-09-30 3172
2015-12-31 2746
2016-03-31 2616
2016-06-30 2920
2016-09-30 3078
2016-12-31 2506
2017-03-31 2428
2017-06-30 2697
2017-09-30 2921
2017-12-31 2724
2018-03-31 2301
2018-06-30 2139
2018-09-30 1611
2018-12-31 1781
2019-03-31 1653
2019-06-30 1824
2019-09-30 2175
2019-12-31 1920
2020-03-31 1624
2020-06-30 1500
2020-09-30 1719
2020-12-31 1683
2021-03-31 1463
2021-06-30 1175
2021-09-30 1274
2021-12-31 1210
2022-03-31 1143
2022-06-30 1297
2022-09-30 1384
2022-12-31 1466
2023-03-31 1799
2023-06-30 1996
2023-09-30 2422