Quarterly US dollars
1999-03-31 1020
1999-06-30 990
1999-09-30 2056
1999-12-31 1715
2000-03-31 1512
2000-06-30 1238
2000-09-30 954
2000-12-31 897
2001-03-31 1191
2001-06-30 759
2001-09-30 750
2001-12-31 882
2002-03-31 1166
2002-06-30 1541
2002-09-30 1977
2002-12-31 1142
2003-03-31 1519
2003-06-30 1872
2003-09-30 2055
2003-12-31 1772
2004-03-31 1709
2004-06-30 2508
2004-09-30 2408
2004-12-31 2437
2005-03-31 1866
2005-06-30 1665
2005-09-30 1845
2005-12-31 1465
2006-03-31 1450
2006-06-30 1262
2006-09-30 1566
2006-12-31 1748
2007-03-31 2216
2007-06-30 1966
2007-09-30 1754
2007-12-31 2289
2008-03-31 2042
2008-06-30 2568
2008-09-30 2340
2008-12-31 1718
2009-03-31 1876
2009-06-30 1525
2009-09-30 1224
2009-12-31 2399
2010-03-31 2319
2010-06-30 2597
2010-09-30 2356
2010-12-31 2177
2011-03-31 2419
2011-06-30 2597
2011-09-30 2425
2011-12-31 1929
2012-03-31 2830
2012-06-30 2356
2012-09-30 2281
2012-12-31 2164
2013-03-31 3286
2013-06-30 1943
2013-09-30 2156
2013-12-31 2668
2014-03-31 1805
2014-06-30 1966
2014-09-30 2081
2014-12-31 2020
2015-03-31 1744
2015-06-30 1932
2015-09-30 2180
2015-12-31 2287
2016-03-31 2388
2016-06-30 2206
2016-09-30 2595
2016-12-31 2283
2017-03-31 2351
2017-06-30 3146
2017-09-30 3025
2017-12-31 2957
2018-03-31 2974
2018-06-30 2188
2018-09-30 4412
2018-12-31 3422
2019-03-31 4054
2019-06-30 4427
2019-09-30 4121
2019-12-31 4095
2020-03-31 3203
2020-06-30 3138
2020-09-30 3302
2020-12-31 3349
2021-03-31 3385
2021-06-30 4674
2021-09-30 4966
2021-12-31 4212
2022-03-31 4358
2022-06-30 3747
2022-09-30 5314
2022-12-31 4090
2023-03-31 4488
2023-06-30 4633
2023-09-30 4035