Quarter	US dollars
2004-12-31	920
2005-03-31	902
2005-06-30	932
2005-09-30	1010
2005-12-31	1066
2006-03-31	1235
2006-06-30	1056
2006-09-30	415
2006-12-31	337
2007-03-31	351
2007-06-30	353
2007-09-30	310
2007-12-31	348
2008-03-31	2488
2008-06-30	2350
2008-09-30	2215
2008-12-31	1941
2009-03-31	2001
2009-06-30	1800
2009-09-30	2004
2009-12-31	1842
2010-03-31	1847
2010-06-30	1760
2010-09-30	1724
2010-12-31	1652
2011-03-31	1698
2011-06-30	1458
2011-09-30	1279
2011-12-31	1725
2012-03-31	1616
2012-06-30	1625
2012-09-30	1465
2012-12-31	1471
2013-03-31	1535
2013-06-30	1579
2013-09-30	1631
2013-12-31	1735
2014-03-31	1781
2014-06-30	1983
2014-09-30	2174
2014-12-31	2280
2015-03-31	2304
2015-06-30	1990
2015-09-30	1959
2015-12-31	2045
2016-03-31	2118
2016-06-30	2181
2016-09-30	2179
2016-12-31	3950
2017-03-31	4149
2017-06-30	2750
2017-09-30	2820
2017-12-31	2821
2018-03-31	2940
2018-06-30	2890
2018-09-30	2826
2018-12-31	2725
2019-03-31	2968
2019-06-30	2911
2019-09-30	2901
2019-12-31	2927
2020-03-31	2866
2020-06-30	2854
2020-09-30	2879
2020-12-31	2723
2021-03-31	2722
2021-06-30	2769
2021-09-30	2621
2021-12-31	2584
2022-03-31	2467
2022-06-30	2553
2022-09-30	2532
2022-12-31	2462
2023-03-31	2144
2023-06-30	1957
2023-09-30	1872