Quarter	US dollars
2004-12-31	1194
2005-03-31	1229
2005-06-30	1147
2005-09-30	1311
2005-12-31	1258
2006-03-31	1374
2006-06-30	1922
2006-09-30	1552
2006-12-31	1611
2007-03-31	1414
2007-06-30	1645
2007-09-30	1614
2007-12-31	1635
2008-03-31	1930
2008-12-31	2116
2009-12-31	2191
2010-06-30	2126
2010-09-30	2785
2010-12-31	1602
2011-03-31	3293
2011-06-30	4859
2012-09-30	4811
2013-03-31	4088
2013-06-30	3293
2014-03-31	3688
2014-06-30	4031
2014-12-31	3435
2015-03-31	2815
2015-06-30	2765
2015-09-30	2374
2015-12-31	2121
2016-03-31	2006
2016-06-30	2214
2016-09-30	2033
2016-12-31	2073
2017-03-31	2017
2017-06-30	1951
2017-09-30	1913
2017-12-31	2351
2018-03-31	1792
2018-06-30	1926
2018-09-30	1757
2018-12-31	1965
2019-03-31	2163
2019-06-30	2473
2019-09-30	2718
2019-12-31	2620
2020-03-31	2236
2020-06-30	1951
2020-09-30	1831
2020-12-31	1279
2021-03-31	928
2021-06-30	984
2021-09-30	1177
2021-12-31	1023
2022-03-31	1369
2022-06-30	1844
2022-09-30	2311
2022-12-31	2591
2023-03-31	2240
2023-06-30	2432
2023-09-30	2108