Quarter	US dollars
2004-12-31	2348
2005-03-31	2548
2005-06-30	2807
2005-09-30	2779
2005-12-31	3078
2006-03-31	3238
2006-06-30	2968
2006-09-30	2787
2006-12-31	2429
2007-03-31	3658
2007-06-30	2807
2007-09-30	3716
2007-12-31	4209
2008-03-31	4881
2008-06-30	4147
2008-09-30	4149
2008-12-31	3700
2009-03-31	3594
2009-06-30	3205
2009-09-30	3181
2009-12-31	4048
2010-03-31	3848
2010-06-30	4478
2010-09-30	4802
2010-12-31	1166
2011-03-31	1678
2011-06-30	1663
2011-09-30	1544
2011-12-31	1447
2012-03-31	1568
2012-06-30	1973
2012-09-30	1621
2012-12-31	2006
2013-03-31	1735
2013-06-30	1949
2013-09-30	3119
2013-12-31	2046
2014-03-31	1899
2014-06-30	2098
2014-09-30	2422
2014-12-31	2204
2015-03-31	2445
2015-06-30	2092
2015-09-30	1895
2015-12-31	1971
2016-03-31	1948
2016-06-30	1790
2016-09-30	1603
2016-12-31	1342
2017-03-31	1550
2017-06-30	7464
2017-09-30	7860
2017-12-31	8255
2018-03-31	8063
2018-06-30	7675
2018-09-30	7791
2018-12-31	7855
2019-03-31	7329
2019-06-30	7716
2019-09-30	7489
2019-12-31	8053
2020-03-31	7231
2020-06-30	7506
2020-09-30	8836
2020-12-31	9274
2021-03-31	9028
2021-06-30	9586
2021-09-30	9593
2021-12-31	10117
2022-03-31	9639
2022-06-30	9367
2022-09-30	8562
2022-12-31	8948
2023-03-31	8762
2023-06-30	8996
2023-09-30	8516