Quarter	US dollars
2004-12-31	897
2005-03-31	964
2005-06-30	706
2005-09-30	881
2005-12-31	1653
2006-03-31	1937
2006-06-30	1509
2006-09-30	2290
2006-12-31	1855
2007-03-31	2189
2007-06-30	2614
2007-09-30	2844
2007-12-31	2604
2008-03-31	3140
2008-06-30	4137
2008-09-30	2981
2008-12-31	4372
2009-03-31	2750
2009-06-30	4316
2009-09-30	4185
2009-12-31	3959
2010-03-31	3575
2010-06-30	4887
2010-09-30	3862
2010-12-31	4731
2011-03-31	4790
2011-06-30	4178
2011-09-30	2739
2011-12-31	3267
2012-03-31	4467
2012-06-30	4110
2012-09-30	4328
2012-12-31	3824
2013-03-31	3534
2013-06-30	3235
2013-09-30	4107
2013-12-31	2980
2014-03-31	2618
2014-06-30	2416
2014-09-30	2763
2014-12-31	2379
2015-03-31	2242
2015-06-30	2267
2015-09-30	2434
2015-12-31	2089
2016-03-31	2111
2016-06-30	1712
2016-09-30	1678
2016-12-31	1462
2017-03-31	1665
2017-06-30	2100
2017-09-30	1784
2017-12-31	1616
2018-03-31	1732
2018-06-30	1583
2018-09-30	1557
2018-12-31	1060
2019-03-31	1468
2019-06-30	1456
2019-09-30	1588
2019-12-31	1587
2020-03-31	2211
2020-06-30	1820
2020-09-30	923
2020-12-31	1175
2021-03-31	2072
2021-06-30	2141
2021-09-30	1575
2021-12-31	2012
2022-03-31	2109
2022-06-30	1983
2022-09-30	1976
2022-12-31	2209
2023-03-31	2103
2023-06-30	1550
2023-09-30	1485